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Finding the Fourth Proportional to 12,366.70, 18,524.85 and 7,672.30

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Solution

The fourth proportional to 12,366.70, 18,524.85 and 7,672.30 is: 11,492.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,366.70 : 18,524.85 = 7,672.30 : x
  2. Step 2: Convert to fraction form
    12,366.70/18,524.85 = 7,672.30/x
  3. Step 3: Cross multiply
    12,366.70x = 18,524.85 × 7,672.30
  4. Step 4: Simplify right side
    12,366.70x = 142,128,206.66
  5. Step 5: Solve for x
    x = 142,128,206.66/12,366.70
  6. Step 6: Final answer
    x = 11,492.82

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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.