Home / 31,579.96-43,578.66-18,149.08

Finding the Fourth Proportional to 31,579.96, 43,578.66 and 18,149.08

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Solution

The fourth proportional to 31,579.96, 43,578.66 and 18,149.08 is: 25,044.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.96 : 43,578.66 = 18,149.08 : x
  2. Step 2: Convert to fraction form
    31,579.96/43,578.66 = 18,149.08/x
  3. Step 3: Cross multiply
    31,579.96x = 43,578.66 × 18,149.08
  4. Step 4: Simplify right side
    31,579.96x = 790,912,586.63
  5. Step 5: Solve for x
    x = 790,912,586.63/31,579.96
  6. Step 6: Final answer
    x = 25,044.76

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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.