Home / 15,020.38-20,728.90-8,647.92

Finding the Fourth Proportional to 15,020.38, 20,728.90 and 8,647.92

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Solution

The fourth proportional to 15,020.38, 20,728.90 and 8,647.92 is: 11,934.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.38 : 20,728.90 = 8,647.92 : x
  2. Step 2: Convert to fraction form
    15,020.38/20,728.90 = 8,647.92/x
  3. Step 3: Cross multiply
    15,020.38x = 20,728.90 × 8,647.92
  4. Step 4: Simplify right side
    15,020.38x = 179,261,868.89
  5. Step 5: Solve for x
    x = 179,261,868.89/15,020.38
  6. Step 6: Final answer
    x = 11,934.58

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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.