Home / 28,660.38-42,964.92-11,126.04

Finding the Fourth Proportional to 28,660.38, 42,964.92 and 11,126.04

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Solution

The fourth proportional to 28,660.38, 42,964.92 and 11,126.04 is: 16,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.38 : 42,964.92 = 11,126.04 : x
  2. Step 2: Convert to fraction form
    28,660.38/42,964.92 = 11,126.04/x
  3. Step 3: Cross multiply
    28,660.38x = 42,964.92 × 11,126.04
  4. Step 4: Simplify right side
    28,660.38x = 478,029,418.52
  5. Step 5: Solve for x
    x = 478,029,418.52/28,660.38
  6. Step 6: Final answer
    x = 16,679.10

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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.