Home / 15,452.37-21,324.31-8,378.79

Finding the Fourth Proportional to 15,452.37, 21,324.31 and 8,378.79

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Solution

The fourth proportional to 15,452.37, 21,324.31 and 8,378.79 is: 11,562.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,452.37 : 21,324.31 = 8,378.79 : x
  2. Step 2: Convert to fraction form
    15,452.37/21,324.31 = 8,378.79/x
  3. Step 3: Cross multiply
    15,452.37x = 21,324.31 × 8,378.79
  4. Step 4: Simplify right side
    15,452.37x = 178,671,915.38
  5. Step 5: Solve for x
    x = 178,671,915.38/15,452.37
  6. Step 6: Final answer
    x = 11,562.75

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Double scale
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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.