Home / 31,221.86-43,082.64-18,475.43

Finding the Fourth Proportional to 31,221.86, 43,082.64 and 18,475.43

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Solution

The fourth proportional to 31,221.86, 43,082.64 and 18,475.43 is: 25,494.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,221.86 : 43,082.64 = 18,475.43 : x
  2. Step 2: Convert to fraction form
    31,221.86/43,082.64 = 18,475.43/x
  3. Step 3: Cross multiply
    31,221.86x = 43,082.64 × 18,475.43
  4. Step 4: Simplify right side
    31,221.86x = 795,970,084.12
  5. Step 5: Solve for x
    x = 795,970,084.12/31,221.86
  6. Step 6: Final answer
    x = 25,494.00

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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.