Home / 31,553.82-43,530.62-18,122.00

Finding the Fourth Proportional to 31,553.82, 43,530.62 and 18,122.00

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Solution

The fourth proportional to 31,553.82, 43,530.62 and 18,122.00 is: 25,000.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,553.82 : 43,530.62 = 18,122.00 : x
  2. Step 2: Convert to fraction form
    31,553.82/43,530.62 = 18,122.00/x
  3. Step 3: Cross multiply
    31,553.82x = 43,530.62 × 18,122.00
  4. Step 4: Simplify right side
    31,553.82x = 788,861,587.38
  5. Step 5: Solve for x
    x = 788,861,587.38/31,553.82
  6. Step 6: Final answer
    x = 25,000.51

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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.