Home / 42,481.35-63,721.80-10,891.35

Finding the Fourth Proportional to 42,481.35, 63,721.80 and 10,891.35

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Solution

The fourth proportional to 42,481.35, 63,721.80 and 10,891.35 is: 16,336.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,481.35 : 63,721.80 = 10,891.35 : x
  2. Step 2: Convert to fraction form
    42,481.35/63,721.80 = 10,891.35/x
  3. Step 3: Cross multiply
    42,481.35x = 63,721.80 × 10,891.35
  4. Step 4: Simplify right side
    42,481.35x = 694,016,426.43
  5. Step 5: Solve for x
    x = 694,016,426.43/42,481.35
  6. Step 6: Final answer
    x = 16,336.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.