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Finding the Fourth Proportional to 14,727.76, 20,318.88 and 9,694.87

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Solution

The fourth proportional to 14,727.76, 20,318.88 and 9,694.87 is: 13,375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,727.76 : 20,318.88 = 9,694.87 : x
  2. Step 2: Convert to fraction form
    14,727.76/20,318.88 = 9,694.87/x
  3. Step 3: Cross multiply
    14,727.76x = 20,318.88 × 9,694.87
  4. Step 4: Simplify right side
    14,727.76x = 196,988,900.15
  5. Step 5: Solve for x
    x = 196,988,900.15/14,727.76
  6. Step 6: Final answer
    x = 13,375.35

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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.