Home / 39,411.18-54,387.24-21,506.13

Finding the Fourth Proportional to 39,411.18, 54,387.24 and 21,506.13

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Solution

The fourth proportional to 39,411.18, 54,387.24 and 21,506.13 is: 29,678.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,411.18 : 54,387.24 = 21,506.13 : x
  2. Step 2: Convert to fraction form
    39,411.18/54,387.24 = 21,506.13/x
  3. Step 3: Cross multiply
    39,411.18x = 54,387.24 × 21,506.13
  4. Step 4: Simplify right side
    39,411.18x = 1,169,659,053.78
  5. Step 5: Solve for x
    x = 1,169,659,053.78/39,411.18
  6. Step 6: Final answer
    x = 29,678.36

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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.