Home / 22,230.16-30,678.28-12,158.42

Finding the Fourth Proportional to 22,230.16, 30,678.28 and 12,158.42

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Solution

The fourth proportional to 22,230.16, 30,678.28 and 12,158.42 is: 16,778.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,230.16 : 30,678.28 = 12,158.42 : x
  2. Step 2: Convert to fraction form
    22,230.16/30,678.28 = 12,158.42/x
  3. Step 3: Cross multiply
    22,230.16x = 30,678.28 × 12,158.42
  4. Step 4: Simplify right side
    22,230.16x = 372,999,229.33
  5. Step 5: Solve for x
    x = 372,999,229.33/22,230.16
  6. Step 6: Final answer
    x = 16,778.97

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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.