Home / 11,883.28-16,399.36-7,691.52

Finding the Fourth Proportional to 11,883.28, 16,399.36 and 7,691.52

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Solution

The fourth proportional to 11,883.28, 16,399.36 and 7,691.52 is: 10,614.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,883.28 : 16,399.36 = 7,691.52 : x
  2. Step 2: Convert to fraction form
    11,883.28/16,399.36 = 7,691.52/x
  3. Step 3: Cross multiply
    11,883.28x = 16,399.36 × 7,691.52
  4. Step 4: Simplify right side
    11,883.28x = 126,136,005.43
  5. Step 5: Solve for x
    x = 126,136,005.43/11,883.28
  6. Step 6: Final answer
    x = 10,614.58

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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.