Home / 20,191.11-30,287.69-7,712.23

Finding the Fourth Proportional to 20,191.11, 30,287.69 and 7,712.23

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Solution

The fourth proportional to 20,191.11, 30,287.69 and 7,712.23 is: 11,568.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.11 : 30,287.69 = 7,712.23 : x
  2. Step 2: Convert to fraction form
    20,191.11/30,287.69 = 7,712.23/x
  3. Step 3: Cross multiply
    20,191.11x = 30,287.69 × 7,712.23
  4. Step 4: Simplify right side
    20,191.11x = 233,585,631.45
  5. Step 5: Solve for x
    x = 233,585,631.45/20,191.11
  6. Step 6: Final answer
    x = 11,568.74

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.