Home / 20,748.39-28,632.60-11,316.75

Finding the Fourth Proportional to 20,748.39, 28,632.60 and 11,316.75

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Solution

The fourth proportional to 20,748.39, 28,632.60 and 11,316.75 is: 15,617.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.39 : 28,632.60 = 11,316.75 : x
  2. Step 2: Convert to fraction form
    20,748.39/28,632.60 = 11,316.75/x
  3. Step 3: Cross multiply
    20,748.39x = 28,632.60 × 11,316.75
  4. Step 4: Simplify right side
    20,748.39x = 324,027,976.05
  5. Step 5: Solve for x
    x = 324,027,976.05/20,748.39
  6. Step 6: Final answer
    x = 15,617.02

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Similar ratio
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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.