Home / 20,976.39-28,947.84-11,544.96

Finding the Fourth Proportional to 20,976.39, 28,947.84 and 11,544.96

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Solution

The fourth proportional to 20,976.39, 28,947.84 and 11,544.96 is: 15,932.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.39 : 28,947.84 = 11,544.96 : x
  2. Step 2: Convert to fraction form
    20,976.39/28,947.84 = 11,544.96/x
  3. Step 3: Cross multiply
    20,976.39x = 28,947.84 × 11,544.96
  4. Step 4: Simplify right side
    20,976.39x = 334,201,654.89
  5. Step 5: Solve for x
    x = 334,201,654.89/20,976.39
  6. Step 6: Final answer
    x = 15,932.28

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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.