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Finding the Fourth Proportional to 14,869.46, 20,520.14 and 8,154.68

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Solution

The fourth proportional to 14,869.46, 20,520.14 and 8,154.68 is: 11,253.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,869.46 : 20,520.14 = 8,154.68 : x
  2. Step 2: Convert to fraction form
    14,869.46/20,520.14 = 8,154.68/x
  3. Step 3: Cross multiply
    14,869.46x = 20,520.14 × 8,154.68
  4. Step 4: Simplify right side
    14,869.46x = 167,335,031.88
  5. Step 5: Solve for x
    x = 167,335,031.88/14,869.46
  6. Step 6: Final answer
    x = 11,253.61

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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.