Home / 11,489.20-15,856.56-6,773.92

Finding the Fourth Proportional to 11,489.20, 15,856.56 and 6,773.92

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Solution

The fourth proportional to 11,489.20, 15,856.56 and 6,773.92 is: 9,348.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.20 : 15,856.56 = 6,773.92 : x
  2. Step 2: Convert to fraction form
    11,489.20/15,856.56 = 6,773.92/x
  3. Step 3: Cross multiply
    11,489.20x = 15,856.56 × 6,773.92
  4. Step 4: Simplify right side
    11,489.20x = 107,411,068.92
  5. Step 5: Solve for x
    x = 107,411,068.92/11,489.20
  6. Step 6: Final answer
    x = 9,348.87

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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.