Home / 15,141.28-20,892.56-8,516

Finding the Fourth Proportional to 15,141.28, 20,892.56 and 8,516

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Solution

The fourth proportional to 15,141.28, 20,892.56 and 8,516 is: 11,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,141.28 : 20,892.56 = 8,516 : x
  2. Step 2: Convert to fraction form
    15,141.28/20,892.56 = 8,516/x
  3. Step 3: Cross multiply
    15,141.28x = 20,892.56 × 8,516
  4. Step 4: Simplify right side
    15,141.28x = 177,921,040.96
  5. Step 5: Solve for x
    x = 177,921,040.96/15,141.28
  6. Step 6: Final answer
    x = 11,750.73

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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.