Home / 18,642.38-25,728.30-13,918.46

Finding the Fourth Proportional to 18,642.38, 25,728.30 and 13,918.46

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Solution

The fourth proportional to 18,642.38, 25,728.30 and 13,918.46 is: 19,208.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.38 : 25,728.30 = 13,918.46 : x
  2. Step 2: Convert to fraction form
    18,642.38/25,728.30 = 13,918.46/x
  3. Step 3: Cross multiply
    18,642.38x = 25,728.30 × 13,918.46
  4. Step 4: Simplify right side
    18,642.38x = 358,098,314.42
  5. Step 5: Solve for x
    x = 358,098,314.42/18,642.38
  6. Step 6: Final answer
    x = 19,208.83

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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.