Home / 39,795.51-54,917.22-21,889.45

Finding the Fourth Proportional to 39,795.51, 54,917.22 and 21,889.45

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Solution

The fourth proportional to 39,795.51, 54,917.22 and 21,889.45 is: 30,207.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,795.51 : 54,917.22 = 21,889.45 : x
  2. Step 2: Convert to fraction form
    39,795.51/54,917.22 = 21,889.45/x
  3. Step 3: Cross multiply
    39,795.51x = 54,917.22 × 21,889.45
  4. Step 4: Simplify right side
    39,795.51x = 1,202,107,892.06
  5. Step 5: Solve for x
    x = 1,202,107,892.06/39,795.51
  6. Step 6: Final answer
    x = 30,207.12

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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.