Home / 22,358.40-30,855.12-12,287.79

Finding the Fourth Proportional to 22,358.40, 30,855.12 and 12,287.79

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Solution

The fourth proportional to 22,358.40, 30,855.12 and 12,287.79 is: 16,957.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,358.40 : 30,855.12 = 12,287.79 : x
  2. Step 2: Convert to fraction form
    22,358.40/30,855.12 = 12,287.79/x
  3. Step 3: Cross multiply
    22,358.40x = 30,855.12 × 12,287.79
  4. Step 4: Simplify right side
    22,358.40x = 379,141,234.98
  5. Step 5: Solve for x
    x = 379,141,234.98/22,358.40
  6. Step 6: Final answer
    x = 16,957.44

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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.