Home / 20,528.90-28,329.48-11,576.24

Finding the Fourth Proportional to 20,528.90, 28,329.48 and 11,576.24

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Solution

The fourth proportional to 20,528.90, 28,329.48 and 11,576.24 is: 15,974.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.90 : 28,329.48 = 11,576.24 : x
  2. Step 2: Convert to fraction form
    20,528.90/28,329.48 = 11,576.24/x
  3. Step 3: Cross multiply
    20,528.90x = 28,329.48 × 11,576.24
  4. Step 4: Simplify right side
    20,528.90x = 327,948,717.91
  5. Step 5: Solve for x
    x = 327,948,717.91/20,528.90
  6. Step 6: Final answer
    x = 15,974.98

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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.