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Finding the Fourth Proportional to 10,393.71, 15,660.73 and 8,585.34

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Solution

The fourth proportional to 10,393.71, 15,660.73 and 8,585.34 is: 12,935.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,393.71 : 15,660.73 = 8,585.34 : x
  2. Step 2: Convert to fraction form
    10,393.71/15,660.73 = 8,585.34/x
  3. Step 3: Cross multiply
    10,393.71x = 15,660.73 × 8,585.34
  4. Step 4: Simplify right side
    10,393.71x = 134,452,691.70
  5. Step 5: Solve for x
    x = 134,452,691.70/10,393.71
  6. Step 6: Final answer
    x = 12,935.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.