Home / 12,630.97-17,427.21-8,154.91

Finding the Fourth Proportional to 12,630.97, 17,427.21 and 8,154.91

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Solution

The fourth proportional to 12,630.97, 17,427.21 and 8,154.91 is: 11,251.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.97 : 17,427.21 = 8,154.91 : x
  2. Step 2: Convert to fraction form
    12,630.97/17,427.21 = 8,154.91/x
  3. Step 3: Cross multiply
    12,630.97x = 17,427.21 × 8,154.91
  4. Step 4: Simplify right side
    12,630.97x = 142,117,241.97
  5. Step 5: Solve for x
    x = 142,117,241.97/12,630.97
  6. Step 6: Final answer
    x = 11,251.50

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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.