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Finding the Fourth Proportional to 12,551.88, 17,321.04 and 7,518.96

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Solution

The fourth proportional to 12,551.88, 17,321.04 and 7,518.96 is: 10,375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.88 : 17,321.04 = 7,518.96 : x
  2. Step 2: Convert to fraction form
    12,551.88/17,321.04 = 7,518.96/x
  3. Step 3: Cross multiply
    12,551.88x = 17,321.04 × 7,518.96
  4. Step 4: Simplify right side
    12,551.88x = 130,236,206.92
  5. Step 5: Solve for x
    x = 130,236,206.92/12,551.88
  6. Step 6: Final answer
    x = 10,375.83

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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.