Home / 20,249.40-27,971.42-18,363.12

Finding the Fourth Proportional to 20,249.40, 27,971.42 and 18,363.12

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Solution

The fourth proportional to 20,249.40, 27,971.42 and 18,363.12 is: 25,365.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.40 : 27,971.42 = 18,363.12 : x
  2. Step 2: Convert to fraction form
    20,249.40/27,971.42 = 18,363.12/x
  3. Step 3: Cross multiply
    20,249.40x = 27,971.42 × 18,363.12
  4. Step 4: Simplify right side
    20,249.40x = 513,642,542.03
  5. Step 5: Solve for x
    x = 513,642,542.03/20,249.40
  6. Step 6: Final answer
    x = 25,365.82

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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.