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Finding the Fourth Proportional to 14,600.81, 20,149.13 and 8,314.40

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Solution

The fourth proportional to 14,600.81, 20,149.13 and 8,314.40 is: 11,473.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,600.81 : 20,149.13 = 8,314.40 : x
  2. Step 2: Convert to fraction form
    14,600.81/20,149.13 = 8,314.40/x
  3. Step 3: Cross multiply
    14,600.81x = 20,149.13 × 8,314.40
  4. Step 4: Simplify right side
    14,600.81x = 167,527,997.63
  5. Step 5: Solve for x
    x = 167,527,997.63/14,600.81
  6. Step 6: Final answer
    x = 11,473.88

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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.