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Finding the Fourth Proportional to 14,649.73, 20,217.03 and 8,981.21

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Solution

The fourth proportional to 14,649.73, 20,217.03 and 8,981.21 is: 12,394.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.73 : 20,217.03 = 8,981.21 : x
  2. Step 2: Convert to fraction form
    14,649.73/20,217.03 = 8,981.21/x
  3. Step 3: Cross multiply
    14,649.73x = 20,217.03 × 8,981.21
  4. Step 4: Simplify right side
    14,649.73x = 181,573,408.87
  5. Step 5: Solve for x
    x = 181,573,408.87/14,649.73
  6. Step 6: Final answer
    x = 12,394.32

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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.