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Finding the Fourth Proportional to 12,462.32, 18,649.71 and 9,671.20

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Solution

The fourth proportional to 12,462.32, 18,649.71 and 9,671.20 is: 14,472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,462.32 : 18,649.71 = 9,671.20 : x
  2. Step 2: Convert to fraction form
    12,462.32/18,649.71 = 9,671.20/x
  3. Step 3: Cross multiply
    12,462.32x = 18,649.71 × 9,671.20
  4. Step 4: Simplify right side
    12,462.32x = 180,365,028.73
  5. Step 5: Solve for x
    x = 180,365,028.73/12,462.32
  6. Step 6: Final answer
    x = 14,472.83

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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.