Home / 28,221.71-42,295.42-15,747.61

Finding the Fourth Proportional to 28,221.71, 42,295.42 and 15,747.61

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Solution

The fourth proportional to 28,221.71, 42,295.42 and 15,747.61 is: 23,600.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.71 : 42,295.42 = 15,747.61 : x
  2. Step 2: Convert to fraction form
    28,221.71/42,295.42 = 15,747.61/x
  3. Step 3: Cross multiply
    28,221.71x = 42,295.42 × 15,747.61
  4. Step 4: Simplify right side
    28,221.71x = 666,051,778.95
  5. Step 5: Solve for x
    x = 666,051,778.95/28,221.71
  6. Step 6: Final answer
    x = 23,600.69

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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.