Home / 18,403.88-25,397.42-10,020.38

Finding the Fourth Proportional to 18,403.88, 25,397.42 and 10,020.38

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Solution

The fourth proportional to 18,403.88, 25,397.42 and 10,020.38 is: 13,828.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.88 : 25,397.42 = 10,020.38 : x
  2. Step 2: Convert to fraction form
    18,403.88/25,397.42 = 10,020.38/x
  3. Step 3: Cross multiply
    18,403.88x = 25,397.42 × 10,020.38
  4. Step 4: Simplify right side
    18,403.88x = 254,491,622.33
  5. Step 5: Solve for x
    x = 254,491,622.33/18,403.88
  6. Step 6: Final answer
    x = 13,828.15

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Half scale
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Double scale
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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.