Home / 31,811.67-43,896.78-18,387.27

Finding the Fourth Proportional to 31,811.67, 43,896.78 and 18,387.27

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Solution

The fourth proportional to 31,811.67, 43,896.78 and 18,387.27 is: 25,372.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.67 : 43,896.78 = 18,387.27 : x
  2. Step 2: Convert to fraction form
    31,811.67/43,896.78 = 18,387.27/x
  3. Step 3: Cross multiply
    31,811.67x = 43,896.78 × 18,387.27
  4. Step 4: Simplify right side
    31,811.67x = 807,141,945.99
  5. Step 5: Solve for x
    x = 807,141,945.99/31,811.67
  6. Step 6: Final answer
    x = 25,372.51

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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.