Home / 20,528.20-28,329.26-11,576.16

Finding the Fourth Proportional to 20,528.20, 28,329.26 and 11,576.16

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Solution

The fourth proportional to 20,528.20, 28,329.26 and 11,576.16 is: 15,975.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.20 : 28,329.26 = 11,576.16 : x
  2. Step 2: Convert to fraction form
    20,528.20/28,329.26 = 11,576.16/x
  3. Step 3: Cross multiply
    20,528.20x = 28,329.26 × 11,576.16
  4. Step 4: Simplify right side
    20,528.20x = 327,944,046.44
  5. Step 5: Solve for x
    x = 327,944,046.44/20,528.20
  6. Step 6: Final answer
    x = 15,975.29

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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.