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Finding the Fourth Proportional to 25,998.98, 38,986.11 and 12,835.97

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Solution

The fourth proportional to 25,998.98, 38,986.11 and 12,835.97 is: 19,247.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,998.98 : 38,986.11 = 12,835.97 : x
  2. Step 2: Convert to fraction form
    25,998.98/38,986.11 = 12,835.97/x
  3. Step 3: Cross multiply
    25,998.98x = 38,986.11 × 12,835.97
  4. Step 4: Simplify right side
    25,998.98x = 500,424,489.64
  5. Step 5: Solve for x
    x = 500,424,489.64/25,998.98
  6. Step 6: Final answer
    x = 19,247.85

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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.