Home / 31,789.87-43,877.99-18,368.92

Finding the Fourth Proportional to 31,789.87, 43,877.99 and 18,368.92

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Solution

The fourth proportional to 31,789.87, 43,877.99 and 18,368.92 is: 25,353.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.87 : 43,877.99 = 18,368.92 : x
  2. Step 2: Convert to fraction form
    31,789.87/43,877.99 = 18,368.92/x
  3. Step 3: Cross multiply
    31,789.87x = 43,877.99 × 18,368.92
  4. Step 4: Simplify right side
    31,789.87x = 805,991,288.07
  5. Step 5: Solve for x
    x = 805,991,288.07/31,789.87
  6. Step 6: Final answer
    x = 25,353.71

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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.