Home / 39,359.90-54,316.31-21,454.89

Finding the Fourth Proportional to 39,359.90, 54,316.31 and 21,454.89

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Solution

The fourth proportional to 39,359.90, 54,316.31 and 21,454.89 is: 29,607.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,359.90 : 54,316.31 = 21,454.89 : x
  2. Step 2: Convert to fraction form
    39,359.90/54,316.31 = 21,454.89/x
  3. Step 3: Cross multiply
    39,359.90x = 54,316.31 × 21,454.89
  4. Step 4: Simplify right side
    39,359.90x = 1,165,350,348.98
  5. Step 5: Solve for x
    x = 1,165,350,348.98/39,359.90
  6. Step 6: Final answer
    x = 29,607.56

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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.