Home / 20,748.42-28,632.78-11,316.96

Finding the Fourth Proportional to 20,748.42, 28,632.78 and 11,316.96

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Solution

The fourth proportional to 20,748.42, 28,632.78 and 11,316.96 is: 15,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.42 : 28,632.78 = 11,316.96 : x
  2. Step 2: Convert to fraction form
    20,748.42/28,632.78 = 11,316.96/x
  3. Step 3: Cross multiply
    20,748.42x = 28,632.78 × 11,316.96
  4. Step 4: Simplify right side
    20,748.42x = 324,036,025.95
  5. Step 5: Solve for x
    x = 324,036,025.95/20,748.42
  6. Step 6: Final answer
    x = 15,617.38

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Half scale
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Double scale
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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.