Home / 38,458,446,645.57-53,072,967,987.21-21,311,586,342.40

Finding the Fourth Proportional to 38,458,446,645.57, 53,072,967,987.21 and 21,311,586,342.40

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Solution

The fourth proportional to 38,458,446,645.57, 53,072,967,987.21 and 21,311,586,342.40 is: 29,410,161,833.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,458,446,645.57 : 53,072,967,987.21 = 21,311,586,342.40 : x
  2. Step 2: Convert to fraction form
    38,458,446,645.57/53,072,967,987.21 = 21,311,586,342.40/x
  3. Step 3: Cross multiply
    38,458,446,645.57x = 53,072,967,987.21 × 21,311,586,342.40
  4. Step 4: Simplify right side
    38,458,446,645.57x = 1,131,069,139,706,857,127,936
  5. Step 5: Solve for x
    x = 1,131,069,139,706,857,127,936/38,458,446,645.57
  6. Step 6: Final answer
    x = 29,410,161,833.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.