Home / 21,189.62-29,375.60-20,066.18

Finding the Fourth Proportional to 21,189.62, 29,375.60 and 20,066.18

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Solution

The fourth proportional to 21,189.62, 29,375.60 and 20,066.18 is: 27,818.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.62 : 29,375.60 = 20,066.18 : x
  2. Step 2: Convert to fraction form
    21,189.62/29,375.60 = 20,066.18/x
  3. Step 3: Cross multiply
    21,189.62x = 29,375.60 × 20,066.18
  4. Step 4: Simplify right side
    21,189.62x = 589,456,077.21
  5. Step 5: Solve for x
    x = 589,456,077.21/21,189.62
  6. Step 6: Final answer
    x = 27,818.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.