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Finding the Fourth Proportional to 25,190.80, 37,854.40 and 13,512.40

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Solution

The fourth proportional to 25,190.80, 37,854.40 and 13,512.40 is: 20,305.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,190.80 : 37,854.40 = 13,512.40 : x
  2. Step 2: Convert to fraction form
    25,190.80/37,854.40 = 13,512.40/x
  3. Step 3: Cross multiply
    25,190.80x = 37,854.40 × 13,512.40
  4. Step 4: Simplify right side
    25,190.80x = 511,503,794.56
  5. Step 5: Solve for x
    x = 511,503,794.56/25,190.80
  6. Step 6: Final answer
    x = 20,305.18

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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.