Home / 25,381.60-38,072.16-7,847.20

Finding the Fourth Proportional to 25,381.60, 38,072.16 and 7,847.20

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Solution

The fourth proportional to 25,381.60, 38,072.16 and 7,847.20 is: 11,770.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,381.60 : 38,072.16 = 7,847.20 : x
  2. Step 2: Convert to fraction form
    25,381.60/38,072.16 = 7,847.20/x
  3. Step 3: Cross multiply
    25,381.60x = 38,072.16 × 7,847.20
  4. Step 4: Simplify right side
    25,381.60x = 298,759,853.95
  5. Step 5: Solve for x
    x = 298,759,853.95/25,381.60
  6. Step 6: Final answer
    x = 11,770.73

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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.