Home / 8,755.20-12,113.28-7,424.64

Finding the Fourth Proportional to 8,755.20, 12,113.28 and 7,424.64

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Solution

The fourth proportional to 8,755.20, 12,113.28 and 7,424.64 is: 10,272.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.20 : 12,113.28 = 7,424.64 : x
  2. Step 2: Convert to fraction form
    8,755.20/12,113.28 = 7,424.64/x
  3. Step 3: Cross multiply
    8,755.20x = 12,113.28 × 7,424.64
  4. Step 4: Simplify right side
    8,755.20x = 89,936,743.22
  5. Step 5: Solve for x
    x = 89,936,743.22/8,755.20
  6. Step 6: Final answer
    x = 10,272.38

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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.