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Finding the Fourth Proportional to 20,365.62, 30,549.84 and 8,514.91

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Solution

The fourth proportional to 20,365.62, 30,549.84 and 8,514.91 is: 12,772.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.62 : 30,549.84 = 8,514.91 : x
  2. Step 2: Convert to fraction form
    20,365.62/30,549.84 = 8,514.91/x
  3. Step 3: Cross multiply
    20,365.62x = 30,549.84 × 8,514.91
  4. Step 4: Simplify right side
    20,365.62x = 260,129,138.11
  5. Step 5: Solve for x
    x = 260,129,138.11/20,365.62
  6. Step 6: Final answer
    x = 12,772.95

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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.