Home / 39,036.06-53,869.86-21,131.28

Finding the Fourth Proportional to 39,036.06, 53,869.86 and 21,131.28

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Solution

The fourth proportional to 39,036.06, 53,869.86 and 21,131.28 is: 29,161.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,036.06 : 53,869.86 = 21,131.28 : x
  2. Step 2: Convert to fraction form
    39,036.06/53,869.86 = 21,131.28/x
  3. Step 3: Cross multiply
    39,036.06x = 53,869.86 × 21,131.28
  4. Step 4: Simplify right side
    39,036.06x = 1,138,339,095.22
  5. Step 5: Solve for x
    x = 1,138,339,095.22/39,036.06
  6. Step 6: Final answer
    x = 29,161.22

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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.