Home / 31,330.68-43,249.92-18,753

Finding the Fourth Proportional to 31,330.68, 43,249.92 and 18,753

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Solution

The fourth proportional to 31,330.68, 43,249.92 and 18,753 is: 25,887.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.68 : 43,249.92 = 18,753 : x
  2. Step 2: Convert to fraction form
    31,330.68/43,249.92 = 18,753/x
  3. Step 3: Cross multiply
    31,330.68x = 43,249.92 × 18,753
  4. Step 4: Simplify right side
    31,330.68x = 811,065,749.76
  5. Step 5: Solve for x
    x = 811,065,749.76/31,330.68
  6. Step 6: Final answer
    x = 25,887.27

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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.