Home / 21,550.20-29,737.17-12,118.56

Finding the Fourth Proportional to 21,550.20, 29,737.17 and 12,118.56

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Solution

The fourth proportional to 21,550.20, 29,737.17 and 12,118.56 is: 16,722.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,550.20 : 29,737.17 = 12,118.56 : x
  2. Step 2: Convert to fraction form
    21,550.20/29,737.17 = 12,118.56/x
  3. Step 3: Cross multiply
    21,550.20x = 29,737.17 × 12,118.56
  4. Step 4: Simplify right side
    21,550.20x = 360,371,678.88
  5. Step 5: Solve for x
    x = 360,371,678.88/21,550.20
  6. Step 6: Final answer
    x = 16,722.43

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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.