Home / 11,135.28-15,363.96-6,660.48

Finding the Fourth Proportional to 11,135.28, 15,363.96 and 6,660.48

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Solution

The fourth proportional to 11,135.28, 15,363.96 and 6,660.48 is: 9,189.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.28 : 15,363.96 = 6,660.48 : x
  2. Step 2: Convert to fraction form
    11,135.28/15,363.96 = 6,660.48/x
  3. Step 3: Cross multiply
    11,135.28x = 15,363.96 × 6,660.48
  4. Step 4: Simplify right side
    11,135.28x = 102,331,348.30
  5. Step 5: Solve for x
    x = 102,331,348.30/11,135.28
  6. Step 6: Final answer
    x = 9,189.83

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1.5x scale

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.