Home / 12,168.78-18,254.19-3,848.61

Finding the Fourth Proportional to 12,168.78, 18,254.19 and 3,848.61

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Solution

The fourth proportional to 12,168.78, 18,254.19 and 3,848.61 is: 5,773.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.78 : 18,254.19 = 3,848.61 : x
  2. Step 2: Convert to fraction form
    12,168.78/18,254.19 = 3,848.61/x
  3. Step 3: Cross multiply
    12,168.78x = 18,254.19 × 3,848.61
  4. Step 4: Simplify right side
    12,168.78x = 70,253,258.18
  5. Step 5: Solve for x
    x = 70,253,258.18/12,168.78
  6. Step 6: Final answer
    x = 5,773.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.