Home / 20,928.04-28,879.92-11,496.04

Finding the Fourth Proportional to 20,928.04, 28,879.92 and 11,496.04

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Solution

The fourth proportional to 20,928.04, 28,879.92 and 11,496.04 is: 15,864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.04 : 28,879.92 = 11,496.04 : x
  2. Step 2: Convert to fraction form
    20,928.04/28,879.92 = 11,496.04/x
  3. Step 3: Cross multiply
    20,928.04x = 28,879.92 × 11,496.04
  4. Step 4: Simplify right side
    20,928.04x = 332,004,715.52
  5. Step 5: Solve for x
    x = 332,004,715.52/20,928.04
  6. Step 6: Final answer
    x = 15,864.11

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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.