Home / 20,738.08-28,618.68-11,306.80

Finding the Fourth Proportional to 20,738.08, 28,618.68 and 11,306.80

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Solution

The fourth proportional to 20,738.08, 28,618.68 and 11,306.80 is: 15,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.08 : 28,618.68 = 11,306.80 : x
  2. Step 2: Convert to fraction form
    20,738.08/28,618.68 = 11,306.80/x
  3. Step 3: Cross multiply
    20,738.08x = 28,618.68 × 11,306.80
  4. Step 4: Simplify right side
    20,738.08x = 323,585,691.02
  5. Step 5: Solve for x
    x = 323,585,691.02/20,738.08
  6. Step 6: Final answer
    x = 15,603.45

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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.