Home / 31,850.69-43,959.38-18,430.13

Finding the Fourth Proportional to 31,850.69, 43,959.38 and 18,430.13

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Solution

The fourth proportional to 31,850.69, 43,959.38 and 18,430.13 is: 25,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,850.69 : 43,959.38 = 18,430.13 : x
  2. Step 2: Convert to fraction form
    31,850.69/43,959.38 = 18,430.13/x
  3. Step 3: Cross multiply
    31,850.69x = 43,959.38 × 18,430.13
  4. Step 4: Simplify right side
    31,850.69x = 810,177,105.87
  5. Step 5: Solve for x
    x = 810,177,105.87/31,850.69
  6. Step 6: Final answer
    x = 25,436.72

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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.