Home / 28,165.62-42,220.64-15,691.52

Finding the Fourth Proportional to 28,165.62, 42,220.64 and 15,691.52

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Solution

The fourth proportional to 28,165.62, 42,220.64 and 15,691.52 is: 23,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,165.62 : 42,220.64 = 15,691.52 : x
  2. Step 2: Convert to fraction form
    28,165.62/42,220.64 = 15,691.52/x
  3. Step 3: Cross multiply
    28,165.62x = 42,220.64 × 15,691.52
  4. Step 4: Simplify right side
    28,165.62x = 662,506,161.75
  5. Step 5: Solve for x
    x = 662,506,161.75/28,165.62
  6. Step 6: Final answer
    x = 23,521.80

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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.