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Finding the Fourth Proportional to 14,894.90, 20,553.68 and 8,520.20

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Solution

The fourth proportional to 14,894.90, 20,553.68 and 8,520.20 is: 11,757.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,894.90 : 20,553.68 = 8,520.20 : x
  2. Step 2: Convert to fraction form
    14,894.90/20,553.68 = 8,520.20/x
  3. Step 3: Cross multiply
    14,894.90x = 20,553.68 × 8,520.20
  4. Step 4: Simplify right side
    14,894.90x = 175,121,421.74
  5. Step 5: Solve for x
    x = 175,121,421.74/14,894.90
  6. Step 6: Final answer
    x = 11,757.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.