Home / 14,115.91-21,177.12-4,755.70

Finding the Fourth Proportional to 14,115.91, 21,177.12 and 4,755.70

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Solution

The fourth proportional to 14,115.91, 21,177.12 and 4,755.70 is: 7,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.91 : 21,177.12 = 4,755.70 : x
  2. Step 2: Convert to fraction form
    14,115.91/21,177.12 = 4,755.70/x
  3. Step 3: Cross multiply
    14,115.91x = 21,177.12 × 4,755.70
  4. Step 4: Simplify right side
    14,115.91x = 100,712,029.58
  5. Step 5: Solve for x
    x = 100,712,029.58/14,115.91
  6. Step 6: Final answer
    x = 7,134.65

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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.