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Finding the Fourth Proportional to 25,441.88, 38,162.88 and 7,911.72

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Solution

The fourth proportional to 25,441.88, 38,162.88 and 7,911.72 is: 11,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,441.88 : 38,162.88 = 7,911.72 : x
  2. Step 2: Convert to fraction form
    25,441.88/38,162.88 = 7,911.72/x
  3. Step 3: Cross multiply
    25,441.88x = 38,162.88 × 7,911.72
  4. Step 4: Simplify right side
    25,441.88x = 301,934,020.95
  5. Step 5: Solve for x
    x = 301,934,020.95/25,441.88
  6. Step 6: Final answer
    x = 11,867.60

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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.