Home / 22,218.38-30,661.35-12,146.86

Finding the Fourth Proportional to 22,218.38, 30,661.35 and 12,146.86

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Solution

The fourth proportional to 22,218.38, 30,661.35 and 12,146.86 is: 16,762.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,218.38 : 30,661.35 = 12,146.86 : x
  2. Step 2: Convert to fraction form
    22,218.38/30,661.35 = 12,146.86/x
  3. Step 3: Cross multiply
    22,218.38x = 30,661.35 × 12,146.86
  4. Step 4: Simplify right side
    22,218.38x = 372,439,049.21
  5. Step 5: Solve for x
    x = 372,439,049.21/22,218.38
  6. Step 6: Final answer
    x = 16,762.66

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Half scale
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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.