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Finding the Fourth Proportional to 18,407.26, 27,611.16 and 6,721.66

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Solution

The fourth proportional to 18,407.26, 27,611.16 and 6,721.66 is: 10,082.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.26 : 27,611.16 = 6,721.66 : x
  2. Step 2: Convert to fraction form
    18,407.26/27,611.16 = 6,721.66/x
  3. Step 3: Cross multiply
    18,407.26x = 27,611.16 × 6,721.66
  4. Step 4: Simplify right side
    18,407.26x = 185,592,829.73
  5. Step 5: Solve for x
    x = 185,592,829.73/18,407.26
  6. Step 6: Final answer
    x = 10,082.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.