Home / 16,218.66-22,379.85-9,144.66

Finding the Fourth Proportional to 16,218.66, 22,379.85 and 9,144.66

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Solution

The fourth proportional to 16,218.66, 22,379.85 and 9,144.66 is: 12,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.66 : 22,379.85 = 9,144.66 : x
  2. Step 2: Convert to fraction form
    16,218.66/22,379.85 = 9,144.66/x
  3. Step 3: Cross multiply
    16,218.66x = 22,379.85 × 9,144.66
  4. Step 4: Simplify right side
    16,218.66x = 204,656,119.10
  5. Step 5: Solve for x
    x = 204,656,119.10/16,218.66
  6. Step 6: Final answer
    x = 12,618.56

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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.