Home / 25,112.20-34,654.51-13,781.80

Finding the Fourth Proportional to 25,112.20, 34,654.51 and 13,781.80

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Solution

The fourth proportional to 25,112.20, 34,654.51 and 13,781.80 is: 19,018.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,112.20 : 34,654.51 = 13,781.80 : x
  2. Step 2: Convert to fraction form
    25,112.20/34,654.51 = 13,781.80/x
  3. Step 3: Cross multiply
    25,112.20x = 34,654.51 × 13,781.80
  4. Step 4: Simplify right side
    25,112.20x = 477,601,525.92
  5. Step 5: Solve for x
    x = 477,601,525.92/25,112.20
  6. Step 6: Final answer
    x = 19,018.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.