Home / 10,945.28-15,109.36-8,517.12

Finding the Fourth Proportional to 10,945.28, 15,109.36 and 8,517.12

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Solution

The fourth proportional to 10,945.28, 15,109.36 and 8,517.12 is: 11,757.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,945.28 : 15,109.36 = 8,517.12 : x
  2. Step 2: Convert to fraction form
    10,945.28/15,109.36 = 8,517.12/x
  3. Step 3: Cross multiply
    10,945.28x = 15,109.36 × 8,517.12
  4. Step 4: Simplify right side
    10,945.28x = 128,688,232.24
  5. Step 5: Solve for x
    x = 128,688,232.24/10,945.28
  6. Step 6: Final answer
    x = 11,757.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.