Home / 18,712.88-25,833.52-13,671.44

Finding the Fourth Proportional to 18,712.88, 25,833.52 and 13,671.44

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Solution

The fourth proportional to 18,712.88, 25,833.52 and 13,671.44 is: 18,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.88 : 25,833.52 = 13,671.44 : x
  2. Step 2: Convert to fraction form
    18,712.88/25,833.52 = 13,671.44/x
  3. Step 3: Cross multiply
    18,712.88x = 25,833.52 × 13,671.44
  4. Step 4: Simplify right side
    18,712.88x = 353,181,418.67
  5. Step 5: Solve for x
    x = 353,181,418.67/18,712.88
  6. Step 6: Final answer
    x = 18,873.71

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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.