Home / 27,888.75-38,485.41-15,951.78

Finding the Fourth Proportional to 27,888.75, 38,485.41 and 15,951.78

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Solution

The fourth proportional to 27,888.75, 38,485.41 and 15,951.78 is: 22,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.75 : 38,485.41 = 15,951.78 : x
  2. Step 2: Convert to fraction form
    27,888.75/38,485.41 = 15,951.78/x
  3. Step 3: Cross multiply
    27,888.75x = 38,485.41 × 15,951.78
  4. Step 4: Simplify right side
    27,888.75x = 613,910,793.53
  5. Step 5: Solve for x
    x = 613,910,793.53/27,888.75
  6. Step 6: Final answer
    x = 22,012.85

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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.