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Finding the Fourth Proportional to 8,330.76, 12,447.36 and 8,040.24

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Solution

The fourth proportional to 8,330.76, 12,447.36 and 8,040.24 is: 12,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330.76 : 12,447.36 = 8,040.24 : x
  2. Step 2: Convert to fraction form
    8,330.76/12,447.36 = 8,040.24/x
  3. Step 3: Cross multiply
    8,330.76x = 12,447.36 × 8,040.24
  4. Step 4: Simplify right side
    8,330.76x = 100,079,761.77
  5. Step 5: Solve for x
    x = 100,079,761.77/8,330.76
  6. Step 6: Final answer
    x = 12,013.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.