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Finding the Fourth Proportional to 8,414.13, 12,621.21 and 8,401.98

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Solution

The fourth proportional to 8,414.13, 12,621.21 and 8,401.98 is: 12,602.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,414.13 : 12,621.21 = 8,401.98 : x
  2. Step 2: Convert to fraction form
    8,414.13/12,621.21 = 8,401.98/x
  3. Step 3: Cross multiply
    8,414.13x = 12,621.21 × 8,401.98
  4. Step 4: Simplify right side
    8,414.13x = 106,043,154.00
  5. Step 5: Solve for x
    x = 106,043,154.00/8,414.13
  6. Step 6: Final answer
    x = 12,602.98

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.