Home / 31,579.42-43,578.12-18,141.22

Finding the Fourth Proportional to 31,579.42, 43,578.12 and 18,141.22

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Solution

The fourth proportional to 31,579.42, 43,578.12 and 18,141.22 is: 25,034.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.42 : 43,578.12 = 18,141.22 : x
  2. Step 2: Convert to fraction form
    31,579.42/43,578.12 = 18,141.22/x
  3. Step 3: Cross multiply
    31,579.42x = 43,578.12 × 18,141.22
  4. Step 4: Simplify right side
    31,579.42x = 790,560,262.11
  5. Step 5: Solve for x
    x = 790,560,262.11/31,579.42
  6. Step 6: Final answer
    x = 25,034.03

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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.