Home / 15,452.36-21,324.27-8,378.78

Finding the Fourth Proportional to 15,452.36, 21,324.27 and 8,378.78

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Solution

The fourth proportional to 15,452.36, 21,324.27 and 8,378.78 is: 11,562.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,452.36 : 21,324.27 = 8,378.78 : x
  2. Step 2: Convert to fraction form
    15,452.36/21,324.27 = 8,378.78/x
  3. Step 3: Cross multiply
    15,452.36x = 21,324.27 × 8,378.78
  4. Step 4: Simplify right side
    15,452.36x = 178,671,448.15
  5. Step 5: Solve for x
    x = 178,671,448.15/15,452.36
  6. Step 6: Final answer
    x = 11,562.73

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Double scale
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Similar ratio
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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.