Home / 18,121.80-27,182.33-10,313.88

Finding the Fourth Proportional to 18,121.80, 27,182.33 and 10,313.88

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Solution

The fourth proportional to 18,121.80, 27,182.33 and 10,313.88 is: 15,470.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.80 : 27,182.33 = 10,313.88 : x
  2. Step 2: Convert to fraction form
    18,121.80/27,182.33 = 10,313.88/x
  3. Step 3: Cross multiply
    18,121.80x = 27,182.33 × 10,313.88
  4. Step 4: Simplify right side
    18,121.80x = 280,355,289.74
  5. Step 5: Solve for x
    x = 280,355,289.74/18,121.80
  6. Step 6: Final answer
    x = 15,470.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.