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Finding the Fourth Proportional to 10,880.88, 15,012.24 and 6,403.20

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Solution

The fourth proportional to 10,880.88, 15,012.24 and 6,403.20 is: 8,834.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,880.88 : 15,012.24 = 6,403.20 : x
  2. Step 2: Convert to fraction form
    10,880.88/15,012.24 = 6,403.20/x
  3. Step 3: Cross multiply
    10,880.88x = 15,012.24 × 6,403.20
  4. Step 4: Simplify right side
    10,880.88x = 96,126,375.17
  5. Step 5: Solve for x
    x = 96,126,375.17/10,880.88
  6. Step 6: Final answer
    x = 8,834.43

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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.