Home / 18,456.45-25,471.49-15,089.88

Finding the Fourth Proportional to 18,456.45, 25,471.49 and 15,089.88

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Solution

The fourth proportional to 18,456.45, 25,471.49 and 15,089.88 is: 20,825.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.45 : 25,471.49 = 15,089.88 : x
  2. Step 2: Convert to fraction form
    18,456.45/25,471.49 = 15,089.88/x
  3. Step 3: Cross multiply
    18,456.45x = 25,471.49 × 15,089.88
  4. Step 4: Simplify right side
    18,456.45x = 384,361,727.52
  5. Step 5: Solve for x
    x = 384,361,727.52/18,456.45
  6. Step 6: Final answer
    x = 20,825.33

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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.