Home / 71,511.27-107,272.03-18,920.13

Finding the Fourth Proportional to 71,511.27, 107,272.03 and 18,920.13

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Solution

The fourth proportional to 71,511.27, 107,272.03 and 18,920.13 is: 28,381.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511.27 : 107,272.03 = 18,920.13 : x
  2. Step 2: Convert to fraction form
    71,511.27/107,272.03 = 18,920.13/x
  3. Step 3: Cross multiply
    71,511.27x = 107,272.03 × 18,920.13
  4. Step 4: Simplify right side
    71,511.27x = 2,029,600,752.96
  5. Step 5: Solve for x
    x = 2,029,600,752.96/71,511.27
  6. Step 6: Final answer
    x = 28,381.55

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1.5x scale

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.