Home / 39,549.89-54,578.75-21,644.88

Finding the Fourth Proportional to 39,549.89, 54,578.75 and 21,644.88

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Solution

The fourth proportional to 39,549.89, 54,578.75 and 21,644.88 is: 29,869.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,549.89 : 54,578.75 = 21,644.88 : x
  2. Step 2: Convert to fraction form
    39,549.89/54,578.75 = 21,644.88/x
  3. Step 3: Cross multiply
    39,549.89x = 54,578.75 × 21,644.88
  4. Step 4: Simplify right side
    39,549.89x = 1,181,350,494.30
  5. Step 5: Solve for x
    x = 1,181,350,494.30/39,549.89
  6. Step 6: Final answer
    x = 29,869.88

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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.