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Finding the Fourth Proportional to 9,039.60, 13,491.63 and 8,449.11

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Solution

The fourth proportional to 9,039.60, 13,491.63 and 8,449.11 is: 12,610.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,039.60 : 13,491.63 = 8,449.11 : x
  2. Step 2: Convert to fraction form
    9,039.60/13,491.63 = 8,449.11/x
  3. Step 3: Cross multiply
    9,039.60x = 13,491.63 × 8,449.11
  4. Step 4: Simplify right side
    9,039.60x = 113,992,265.95
  5. Step 5: Solve for x
    x = 113,992,265.95/9,039.60
  6. Step 6: Final answer
    x = 12,610.32

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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.