Home / 15,020.85-20,728.35-8,306.01

Finding the Fourth Proportional to 15,020.85, 20,728.35 and 8,306.01

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Solution

The fourth proportional to 15,020.85, 20,728.35 and 8,306.01 is: 11,462.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.85 : 20,728.35 = 8,306.01 : x
  2. Step 2: Convert to fraction form
    15,020.85/20,728.35 = 8,306.01/x
  3. Step 3: Cross multiply
    15,020.85x = 20,728.35 × 8,306.01
  4. Step 4: Simplify right side
    15,020.85x = 172,169,882.38
  5. Step 5: Solve for x
    x = 172,169,882.38/15,020.85
  6. Step 6: Final answer
    x = 11,462.06

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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.