Home / 21,657.62-29,887.28-12,226.58

Finding the Fourth Proportional to 21,657.62, 29,887.28 and 12,226.58

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Solution

The fourth proportional to 21,657.62, 29,887.28 and 12,226.58 is: 16,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.62 : 29,887.28 = 12,226.58 : x
  2. Step 2: Convert to fraction form
    21,657.62/29,887.28 = 12,226.58/x
  3. Step 3: Cross multiply
    21,657.62x = 29,887.28 × 12,226.58
  4. Step 4: Simplify right side
    21,657.62x = 365,419,219.90
  5. Step 5: Solve for x
    x = 365,419,219.90/21,657.62
  6. Step 6: Final answer
    x = 16,872.55

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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.