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Finding the Fourth Proportional to 12,462.52, 17,193.98 and 7,988.74

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Solution

The fourth proportional to 12,462.52, 17,193.98 and 7,988.74 is: 11,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462.52 : 17,193.98 = 7,988.74 : x
  2. Step 2: Convert to fraction form
    12,462.52/17,193.98 = 7,988.74/x
  3. Step 3: Cross multiply
    12,462.52x = 17,193.98 × 7,988.74
  4. Step 4: Simplify right side
    12,462.52x = 137,358,217.33
  5. Step 5: Solve for x
    x = 137,358,217.33/12,462.52
  6. Step 6: Final answer
    x = 11,021.70

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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.