Home / 18,658.09-25,753.31-12,699.73

Finding the Fourth Proportional to 18,658.09, 25,753.31 and 12,699.73

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Solution

The fourth proportional to 18,658.09, 25,753.31 and 12,699.73 is: 17,529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.09 : 25,753.31 = 12,699.73 : x
  2. Step 2: Convert to fraction form
    18,658.09/25,753.31 = 12,699.73/x
  3. Step 3: Cross multiply
    18,658.09x = 25,753.31 × 12,699.73
  4. Step 4: Simplify right side
    18,658.09x = 327,060,083.61
  5. Step 5: Solve for x
    x = 327,060,083.61/18,658.09
  6. Step 6: Final answer
    x = 17,529.13

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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.