Home / 20,343.38-28,072.45-13,627.92

Finding the Fourth Proportional to 20,343.38, 28,072.45 and 13,627.92

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Solution

The fourth proportional to 20,343.38, 28,072.45 and 13,627.92 is: 18,805.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.38 : 28,072.45 = 13,627.92 : x
  2. Step 2: Convert to fraction form
    20,343.38/28,072.45 = 13,627.92/x
  3. Step 3: Cross multiply
    20,343.38x = 28,072.45 × 13,627.92
  4. Step 4: Simplify right side
    20,343.38x = 382,569,102.80
  5. Step 5: Solve for x
    x = 382,569,102.80/20,343.38
  6. Step 6: Final answer
    x = 18,805.58

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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.