Home / 22,218.24-30,658.56-12,787.20

Finding the Fourth Proportional to 22,218.24, 30,658.56 and 12,787.20

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Solution

The fourth proportional to 22,218.24, 30,658.56 and 12,787.20 is: 17,644.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,218.24 : 30,658.56 = 12,787.20 : x
  2. Step 2: Convert to fraction form
    22,218.24/30,658.56 = 12,787.20/x
  3. Step 3: Cross multiply
    22,218.24x = 30,658.56 × 12,787.20
  4. Step 4: Simplify right side
    22,218.24x = 392,037,138.43
  5. Step 5: Solve for x
    x = 392,037,138.43/22,218.24
  6. Step 6: Final answer
    x = 17,644.83

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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.