Home / 20,204.76-27,882.56-13,143.18

Finding the Fourth Proportional to 20,204.76, 27,882.56 and 13,143.18

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Solution

The fourth proportional to 20,204.76, 27,882.56 and 13,143.18 is: 18,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204.76 : 27,882.56 = 13,143.18 : x
  2. Step 2: Convert to fraction form
    20,204.76/27,882.56 = 13,143.18/x
  3. Step 3: Cross multiply
    20,204.76x = 27,882.56 × 13,143.18
  4. Step 4: Simplify right side
    20,204.76x = 366,465,504.94
  5. Step 5: Solve for x
    x = 366,465,504.94/20,204.76
  6. Step 6: Final answer
    x = 18,137.58

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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.