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Finding the Fourth Proportional to 10,634.40, 15,951.60 and 8,906.40

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Solution

The fourth proportional to 10,634.40, 15,951.60 and 8,906.40 is: 13,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,634.40 : 15,951.60 = 8,906.40 : x
  2. Step 2: Convert to fraction form
    10,634.40/15,951.60 = 8,906.40/x
  3. Step 3: Cross multiply
    10,634.40x = 15,951.60 × 8,906.40
  4. Step 4: Simplify right side
    10,634.40x = 142,071,330.24
  5. Step 5: Solve for x
    x = 142,071,330.24/10,634.40
  6. Step 6: Final answer
    x = 13,359.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.