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Finding the Fourth Proportional to 12,481.12, 17,223.24 and 7,451.02

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Solution

The fourth proportional to 12,481.12, 17,223.24 and 7,451.02 is: 10,281.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.12 : 17,223.24 = 7,451.02 : x
  2. Step 2: Convert to fraction form
    12,481.12/17,223.24 = 7,451.02/x
  3. Step 3: Cross multiply
    12,481.12x = 17,223.24 × 7,451.02
  4. Step 4: Simplify right side
    12,481.12x = 128,330,705.70
  5. Step 5: Solve for x
    x = 128,330,705.70/12,481.12
  6. Step 6: Final answer
    x = 10,281.99

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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.