Home / 20,231.39-27,915.80-11,734.29

Finding the Fourth Proportional to 20,231.39, 27,915.80 and 11,734.29

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Solution

The fourth proportional to 20,231.39, 27,915.80 and 11,734.29 is: 16,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.39 : 27,915.80 = 11,734.29 : x
  2. Step 2: Convert to fraction form
    20,231.39/27,915.80 = 11,734.29/x
  3. Step 3: Cross multiply
    20,231.39x = 27,915.80 × 11,734.29
  4. Step 4: Simplify right side
    20,231.39x = 327,572,034.11
  5. Step 5: Solve for x
    x = 327,572,034.11/20,231.39
  6. Step 6: Final answer
    x = 16,191.27

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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.