Home / 11,160.28-15,403.97-6,447.30

Finding the Fourth Proportional to 11,160.28, 15,403.97 and 6,447.30

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Solution

The fourth proportional to 11,160.28, 15,403.97 and 6,447.30 is: 8,898.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.28 : 15,403.97 = 6,447.30 : x
  2. Step 2: Convert to fraction form
    11,160.28/15,403.97 = 6,447.30/x
  3. Step 3: Cross multiply
    11,160.28x = 15,403.97 × 6,447.30
  4. Step 4: Simplify right side
    11,160.28x = 99,313,974.13
  5. Step 5: Solve for x
    x = 99,313,974.13/11,160.28
  6. Step 6: Final answer
    x = 8,898.88

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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.