Home / 39,279.81-54,207.28-21,375.97

Finding the Fourth Proportional to 39,279.81, 54,207.28 and 21,375.97

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Solution

The fourth proportional to 39,279.81, 54,207.28 and 21,375.97 is: 29,499.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.81 : 54,207.28 = 21,375.97 : x
  2. Step 2: Convert to fraction form
    39,279.81/54,207.28 = 21,375.97/x
  3. Step 3: Cross multiply
    39,279.81x = 54,207.28 × 21,375.97
  4. Step 4: Simplify right side
    39,279.81x = 1,158,732,948.66
  5. Step 5: Solve for x
    x = 1,158,732,948.66/39,279.81
  6. Step 6: Final answer
    x = 29,499.46

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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.