Home / 15,452.28-21,324.04-8,378.72

Finding the Fourth Proportional to 15,452.28, 21,324.04 and 8,378.72

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Solution

The fourth proportional to 15,452.28, 21,324.04 and 8,378.72 is: 11,562.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,452.28 : 21,324.04 = 8,378.72 : x
  2. Step 2: Convert to fraction form
    15,452.28/21,324.04 = 8,378.72/x
  3. Step 3: Cross multiply
    15,452.28x = 21,324.04 × 8,378.72
  4. Step 4: Simplify right side
    15,452.28x = 178,668,160.43
  5. Step 5: Solve for x
    x = 178,668,160.43/15,452.28
  6. Step 6: Final answer
    x = 11,562.58

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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.