Home / 31,789.27-43,859.05-18,358.75

Finding the Fourth Proportional to 31,789.27, 43,859.05 and 18,358.75

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Solution

The fourth proportional to 31,789.27, 43,859.05 and 18,358.75 is: 25,329.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.27 : 43,859.05 = 18,358.75 : x
  2. Step 2: Convert to fraction form
    31,789.27/43,859.05 = 18,358.75/x
  3. Step 3: Cross multiply
    31,789.27x = 43,859.05 × 18,358.75
  4. Step 4: Simplify right side
    31,789.27x = 805,197,334.19
  5. Step 5: Solve for x
    x = 805,197,334.19/31,789.27
  6. Step 6: Final answer
    x = 25,329.22

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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.