Home / 18,390.97-25,381.41-10,839.73

Finding the Fourth Proportional to 18,390.97, 25,381.41 and 10,839.73

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Solution

The fourth proportional to 18,390.97, 25,381.41 and 10,839.73 is: 14,959.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.97 : 25,381.41 = 10,839.73 : x
  2. Step 2: Convert to fraction form
    18,390.97/25,381.41 = 10,839.73/x
  3. Step 3: Cross multiply
    18,390.97x = 25,381.41 × 10,839.73
  4. Step 4: Simplify right side
    18,390.97x = 275,127,631.42
  5. Step 5: Solve for x
    x = 275,127,631.42/18,390.97
  6. Step 6: Final answer
    x = 14,959.93

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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.