Home / 31,721.88-43,775.64-18,292.08

Finding the Fourth Proportional to 31,721.88, 43,775.64 and 18,292.08

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Solution

The fourth proportional to 31,721.88, 43,775.64 and 18,292.08 is: 25,242.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.88 : 43,775.64 = 18,292.08 : x
  2. Step 2: Convert to fraction form
    31,721.88/43,775.64 = 18,292.08/x
  3. Step 3: Cross multiply
    31,721.88x = 43,775.64 × 18,292.08
  4. Step 4: Simplify right side
    31,721.88x = 800,747,508.93
  5. Step 5: Solve for x
    x = 800,747,508.93/31,721.88
  6. Step 6: Final answer
    x = 25,242.75

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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.