Home / 25,778.09-38,658.90-8,243.75

Finding the Fourth Proportional to 25,778.09, 38,658.90 and 8,243.75

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Solution

The fourth proportional to 25,778.09, 38,658.90 and 8,243.75 is: 12,362.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,778.09 : 38,658.90 = 8,243.75 : x
  2. Step 2: Convert to fraction form
    25,778.09/38,658.90 = 8,243.75/x
  3. Step 3: Cross multiply
    25,778.09x = 38,658.90 × 8,243.75
  4. Step 4: Simplify right side
    25,778.09x = 318,694,306.88
  5. Step 5: Solve for x
    x = 318,694,306.88/25,778.09
  6. Step 6: Final answer
    x = 12,362.99

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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.