Home / 11,399.67-15,753.24-8,223.39

Finding the Fourth Proportional to 11,399.67, 15,753.24 and 8,223.39

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Solution

The fourth proportional to 11,399.67, 15,753.24 and 8,223.39 is: 11,363.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.67 : 15,753.24 = 8,223.39 : x
  2. Step 2: Convert to fraction form
    11,399.67/15,753.24 = 8,223.39/x
  3. Step 3: Cross multiply
    11,399.67x = 15,753.24 × 8,223.39
  4. Step 4: Simplify right side
    11,399.67x = 129,545,036.28
  5. Step 5: Solve for x
    x = 129,545,036.28/11,399.67
  6. Step 6: Final answer
    x = 11,363.93

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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.