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Finding the Fourth Proportional to 14,391.87, 21,590.88 and 8,154.87

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Solution

The fourth proportional to 14,391.87, 21,590.88 and 8,154.87 is: 12,234.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.87 : 21,590.88 = 8,154.87 : x
  2. Step 2: Convert to fraction form
    14,391.87/21,590.88 = 8,154.87/x
  3. Step 3: Cross multiply
    14,391.87x = 21,590.88 × 8,154.87
  4. Step 4: Simplify right side
    14,391.87x = 176,070,819.59
  5. Step 5: Solve for x
    x = 176,070,819.59/14,391.87
  6. Step 6: Final answer
    x = 12,234.05

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1.5x scale

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.