Home / 15,546.78-21,455.14-8,833.55

Finding the Fourth Proportional to 15,546.78, 21,455.14 and 8,833.55

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Solution

The fourth proportional to 15,546.78, 21,455.14 and 8,833.55 is: 12,190.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,546.78 : 21,455.14 = 8,833.55 : x
  2. Step 2: Convert to fraction form
    15,546.78/21,455.14 = 8,833.55/x
  3. Step 3: Cross multiply
    15,546.78x = 21,455.14 × 8,833.55
  4. Step 4: Simplify right side
    15,546.78x = 189,524,949.41
  5. Step 5: Solve for x
    x = 189,524,949.41/15,546.78
  6. Step 6: Final answer
    x = 12,190.62

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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.