Home / 39,034.16-53,867.12-21,129.31

Finding the Fourth Proportional to 39,034.16, 53,867.12 and 21,129.31

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Solution

The fourth proportional to 39,034.16, 53,867.12 and 21,129.31 is: 29,158.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,034.16 : 53,867.12 = 21,129.31 : x
  2. Step 2: Convert to fraction form
    39,034.16/53,867.12 = 21,129.31/x
  3. Step 3: Cross multiply
    39,034.16x = 53,867.12 × 21,129.31
  4. Step 4: Simplify right side
    39,034.16x = 1,138,175,077.29
  5. Step 5: Solve for x
    x = 1,138,175,077.29/39,034.16
  6. Step 6: Final answer
    x = 29,158.44

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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.