Home / 31,716.54-43,763.31-18,288.30

Finding the Fourth Proportional to 31,716.54, 43,763.31 and 18,288.30

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Solution

The fourth proportional to 31,716.54, 43,763.31 and 18,288.30 is: 25,234.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,716.54 : 43,763.31 = 18,288.30 : x
  2. Step 2: Convert to fraction form
    31,716.54/43,763.31 = 18,288.30/x
  3. Step 3: Cross multiply
    31,716.54x = 43,763.31 × 18,288.30
  4. Step 4: Simplify right side
    31,716.54x = 800,356,542.27
  5. Step 5: Solve for x
    x = 800,356,542.27/31,716.54
  6. Step 6: Final answer
    x = 25,234.67

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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.