Home / 20,344.38-28,073.83-13,628.92

Finding the Fourth Proportional to 20,344.38, 28,073.83 and 13,628.92

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Solution

The fourth proportional to 20,344.38, 28,073.83 and 13,628.92 is: 18,806.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.38 : 28,073.83 = 13,628.92 : x
  2. Step 2: Convert to fraction form
    20,344.38/28,073.83 = 13,628.92/x
  3. Step 3: Cross multiply
    20,344.38x = 28,073.83 × 13,628.92
  4. Step 4: Simplify right side
    20,344.38x = 382,615,983.16
  5. Step 5: Solve for x
    x = 382,615,983.16/20,344.38
  6. Step 6: Final answer
    x = 18,806.96

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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.