Home / 39,306.31-54,243.68-21,402.29

Finding the Fourth Proportional to 39,306.31, 54,243.68 and 21,402.29

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Solution

The fourth proportional to 39,306.31, 54,243.68 and 21,402.29 is: 29,535.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,306.31 : 54,243.68 = 21,402.29 : x
  2. Step 2: Convert to fraction form
    39,306.31/54,243.68 = 21,402.29/x
  3. Step 3: Cross multiply
    39,306.31x = 54,243.68 × 21,402.29
  4. Step 4: Simplify right side
    39,306.31x = 1,160,938,998.62
  5. Step 5: Solve for x
    x = 1,160,938,998.62/39,306.31
  6. Step 6: Final answer
    x = 29,535.69

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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.