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Finding the Fourth Proportional to 9,031.20, 13,546.80 and 8,599.20

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Solution

The fourth proportional to 9,031.20, 13,546.80 and 8,599.20 is: 12,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,031.20 : 13,546.80 = 8,599.20 : x
  2. Step 2: Convert to fraction form
    9,031.20/13,546.80 = 8,599.20/x
  3. Step 3: Cross multiply
    9,031.20x = 13,546.80 × 8,599.20
  4. Step 4: Simplify right side
    9,031.20x = 116,491,642.56
  5. Step 5: Solve for x
    x = 116,491,642.56/9,031.20
  6. Step 6: Final answer
    x = 12,898.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.