Home / 31,786.74-43,865.24-18,174.65

Finding the Fourth Proportional to 31,786.74, 43,865.24 and 18,174.65

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Solution

The fourth proportional to 31,786.74, 43,865.24 and 18,174.65 is: 25,080.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.74 : 43,865.24 = 18,174.65 : x
  2. Step 2: Convert to fraction form
    31,786.74/43,865.24 = 18,174.65/x
  3. Step 3: Cross multiply
    31,786.74x = 43,865.24 × 18,174.65
  4. Step 4: Simplify right side
    31,786.74x = 797,235,384.17
  5. Step 5: Solve for x
    x = 797,235,384.17/31,786.74
  6. Step 6: Final answer
    x = 25,080.75

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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.