Home / 39,637.07-54,699.15-21,732.20

Finding the Fourth Proportional to 39,637.07, 54,699.15 and 21,732.20

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Solution

The fourth proportional to 39,637.07, 54,699.15 and 21,732.20 is: 29,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,637.07 : 54,699.15 = 21,732.20 : x
  2. Step 2: Convert to fraction form
    39,637.07/54,699.15 = 21,732.20/x
  3. Step 3: Cross multiply
    39,637.07x = 54,699.15 × 21,732.20
  4. Step 4: Simplify right side
    39,637.07x = 1,188,732,594.13
  5. Step 5: Solve for x
    x = 1,188,732,594.13/39,637.07
  6. Step 6: Final answer
    x = 29,990.43

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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.