Home / 20,729.15-28,616.74-12,233.85

Finding the Fourth Proportional to 20,729.15, 28,616.74 and 12,233.85

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Solution

The fourth proportional to 20,729.15, 28,616.74 and 12,233.85 is: 16,888.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.15 : 28,616.74 = 12,233.85 : x
  2. Step 2: Convert to fraction form
    20,729.15/28,616.74 = 12,233.85/x
  3. Step 3: Cross multiply
    20,729.15x = 28,616.74 × 12,233.85
  4. Step 4: Simplify right side
    20,729.15x = 350,092,904.65
  5. Step 5: Solve for x
    x = 350,092,904.65/20,729.15
  6. Step 6: Final answer
    x = 16,888.92

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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.