Home / 31,427.87-43,358.15-17,991.92

Finding the Fourth Proportional to 31,427.87, 43,358.15 and 17,991.92

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Solution

The fourth proportional to 31,427.87, 43,358.15 and 17,991.92 is: 24,821.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,427.87 : 43,358.15 = 17,991.92 : x
  2. Step 2: Convert to fraction form
    31,427.87/43,358.15 = 17,991.92/x
  3. Step 3: Cross multiply
    31,427.87x = 43,358.15 × 17,991.92
  4. Step 4: Simplify right side
    31,427.87x = 780,096,519.52
  5. Step 5: Solve for x
    x = 780,096,519.52/31,427.87
  6. Step 6: Final answer
    x = 24,821.81

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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.