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Finding the Fourth Proportional to 14,674.92, 20,251.39 and 8,387.30

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Solution

The fourth proportional to 14,674.92, 20,251.39 and 8,387.30 is: 11,574.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,674.92 : 20,251.39 = 8,387.30 : x
  2. Step 2: Convert to fraction form
    14,674.92/20,251.39 = 8,387.30/x
  3. Step 3: Cross multiply
    14,674.92x = 20,251.39 × 8,387.30
  4. Step 4: Simplify right side
    14,674.92x = 169,854,438.41
  5. Step 5: Solve for x
    x = 169,854,438.41/14,674.92
  6. Step 6: Final answer
    x = 11,574.47

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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.