Home / 39,304.48-54,241.32-21,399.78

Finding the Fourth Proportional to 39,304.48, 54,241.32 and 21,399.78

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Solution

The fourth proportional to 39,304.48, 54,241.32 and 21,399.78 is: 29,532.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,304.48 : 54,241.32 = 21,399.78 : x
  2. Step 2: Convert to fraction form
    39,304.48/54,241.32 = 21,399.78/x
  3. Step 3: Cross multiply
    39,304.48x = 54,241.32 × 21,399.78
  4. Step 4: Simplify right side
    39,304.48x = 1,160,752,314.91
  5. Step 5: Solve for x
    x = 1,160,752,314.91/39,304.48
  6. Step 6: Final answer
    x = 29,532.32

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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.