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Finding the Fourth Proportional to 15,687.98, 23,538.09 and 6,916.73

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Solution

The fourth proportional to 15,687.98, 23,538.09 and 6,916.73 is: 10,377.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687.98 : 23,538.09 = 6,916.73 : x
  2. Step 2: Convert to fraction form
    15,687.98/23,538.09 = 6,916.73/x
  3. Step 3: Cross multiply
    15,687.98x = 23,538.09 × 6,916.73
  4. Step 4: Simplify right side
    15,687.98x = 162,806,613.25
  5. Step 5: Solve for x
    x = 162,806,613.25/15,687.98
  6. Step 6: Final answer
    x = 10,377.79

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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.