Home / 25,675.90-38,520.60-8,145.70

Finding the Fourth Proportional to 25,675.90, 38,520.60 and 8,145.70

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Solution

The fourth proportional to 25,675.90, 38,520.60 and 8,145.70 is: 12,220.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,675.90 : 38,520.60 = 8,145.70 : x
  2. Step 2: Convert to fraction form
    25,675.90/38,520.60 = 8,145.70/x
  3. Step 3: Cross multiply
    25,675.90x = 38,520.60 × 8,145.70
  4. Step 4: Simplify right side
    25,675.90x = 313,777,251.42
  5. Step 5: Solve for x
    x = 313,777,251.42/25,675.90
  6. Step 6: Final answer
    x = 12,220.69

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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.