Home / 31,786.08-43,866.80-18,359.76

Finding the Fourth Proportional to 31,786.08, 43,866.80 and 18,359.76

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Solution

The fourth proportional to 31,786.08, 43,866.80 and 18,359.76 is: 25,337.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.08 : 43,866.80 = 18,359.76 : x
  2. Step 2: Convert to fraction form
    31,786.08/43,866.80 = 18,359.76/x
  3. Step 3: Cross multiply
    31,786.08x = 43,866.80 × 18,359.76
  4. Step 4: Simplify right side
    31,786.08x = 805,383,919.97
  5. Step 5: Solve for x
    x = 805,383,919.97/31,786.08
  6. Step 6: Final answer
    x = 25,337.63

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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.