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Finding the Fourth Proportional to 12,400.17, 18,602.97 and 4,079.85

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Solution

The fourth proportional to 12,400.17, 18,602.97 and 4,079.85 is: 6,120.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.17 : 18,602.97 = 4,079.85 : x
  2. Step 2: Convert to fraction form
    12,400.17/18,602.97 = 4,079.85/x
  3. Step 3: Cross multiply
    12,400.17x = 18,602.97 × 4,079.85
  4. Step 4: Simplify right side
    12,400.17x = 75,897,327.15
  5. Step 5: Solve for x
    x = 75,897,327.15/12,400.17
  6. Step 6: Final answer
    x = 6,120.67

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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.