Home / 15,020.91-20,728.58-8,306.28

Finding the Fourth Proportional to 15,020.91, 20,728.58 and 8,306.28

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Solution

The fourth proportional to 15,020.91, 20,728.58 and 8,306.28 is: 11,462.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.91 : 20,728.58 = 8,306.28 : x
  2. Step 2: Convert to fraction form
    15,020.91/20,728.58 = 8,306.28/x
  3. Step 3: Cross multiply
    15,020.91x = 20,728.58 × 8,306.28
  4. Step 4: Simplify right side
    15,020.91x = 172,177,347.95
  5. Step 5: Solve for x
    x = 172,177,347.95/15,020.91
  6. Step 6: Final answer
    x = 11,462.51

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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.