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Finding the Fourth Proportional to 14,918.80, 22,375.69 and 4,920.45

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Solution

The fourth proportional to 14,918.80, 22,375.69 and 4,920.45 is: 7,379.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,918.80 : 22,375.69 = 4,920.45 : x
  2. Step 2: Convert to fraction form
    14,918.80/22,375.69 = 4,920.45/x
  3. Step 3: Cross multiply
    14,918.80x = 22,375.69 × 4,920.45
  4. Step 4: Simplify right side
    14,918.80x = 110,098,463.86
  5. Step 5: Solve for x
    x = 110,098,463.86/14,918.80
  6. Step 6: Final answer
    x = 7,379.85

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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.