Home / 39,279.76-54,206.60-21,375.28

Finding the Fourth Proportional to 39,279.76, 54,206.60 and 21,375.28

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Solution

The fourth proportional to 39,279.76, 54,206.60 and 21,375.28 is: 29,498.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.76 : 54,206.60 = 21,375.28 : x
  2. Step 2: Convert to fraction form
    39,279.76/54,206.60 = 21,375.28/x
  3. Step 3: Cross multiply
    39,279.76x = 54,206.60 × 21,375.28
  4. Step 4: Simplify right side
    39,279.76x = 1,158,681,252.85
  5. Step 5: Solve for x
    x = 1,158,681,252.85/39,279.76
  6. Step 6: Final answer
    x = 29,498.18

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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.