Home / 39,757.29-54,864.40-21,851.89

Finding the Fourth Proportional to 39,757.29, 54,864.40 and 21,851.89

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Solution

The fourth proportional to 39,757.29, 54,864.40 and 21,851.89 is: 30,155.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,757.29 : 54,864.40 = 21,851.89 : x
  2. Step 2: Convert to fraction form
    39,757.29/54,864.40 = 21,851.89/x
  3. Step 3: Cross multiply
    39,757.29x = 54,864.40 × 21,851.89
  4. Step 4: Simplify right side
    39,757.29x = 1,198,890,833.72
  5. Step 5: Solve for x
    x = 1,198,890,833.72/39,757.29
  6. Step 6: Final answer
    x = 30,155.25

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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.