Home / 20,632.92-28,474.12-11,680.24

Finding the Fourth Proportional to 20,632.92, 28,474.12 and 11,680.24

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Solution

The fourth proportional to 20,632.92, 28,474.12 and 11,680.24 is: 16,119.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.92 : 28,474.12 = 11,680.24 : x
  2. Step 2: Convert to fraction form
    20,632.92/28,474.12 = 11,680.24/x
  3. Step 3: Cross multiply
    20,632.92x = 28,474.12 × 11,680.24
  4. Step 4: Simplify right side
    20,632.92x = 332,584,496.99
  5. Step 5: Solve for x
    x = 332,584,496.99/20,632.92
  6. Step 6: Final answer
    x = 16,119.12

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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.