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Finding the Fourth Proportional to 14,909.15, 20,575.17 and 8,939.67

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Solution

The fourth proportional to 14,909.15, 20,575.17 and 8,939.67 is: 12,337.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,909.15 : 20,575.17 = 8,939.67 : x
  2. Step 2: Convert to fraction form
    14,909.15/20,575.17 = 8,939.67/x
  3. Step 3: Cross multiply
    14,909.15x = 20,575.17 × 8,939.67
  4. Step 4: Simplify right side
    14,909.15x = 183,935,229.99
  5. Step 5: Solve for x
    x = 183,935,229.99/14,909.15
  6. Step 6: Final answer
    x = 12,337.07

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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.