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Finding the Fourth Proportional to 10,353.71, 15,517.59 and 8,153.75

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Solution

The fourth proportional to 10,353.71, 15,517.59 and 8,153.75 is: 12,220.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,353.71 : 15,517.59 = 8,153.75 : x
  2. Step 2: Convert to fraction form
    10,353.71/15,517.59 = 8,153.75/x
  3. Step 3: Cross multiply
    10,353.71x = 15,517.59 × 8,153.75
  4. Step 4: Simplify right side
    10,353.71x = 126,526,471.87
  5. Step 5: Solve for x
    x = 126,526,471.87/10,353.71
  6. Step 6: Final answer
    x = 12,220.41

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Double scale
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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.