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Finding the Fourth Proportional to 12,101.78, 18,154.80 and 4,310.60

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Solution

The fourth proportional to 12,101.78, 18,154.80 and 4,310.60 is: 6,466.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.78 : 18,154.80 = 4,310.60 : x
  2. Step 2: Convert to fraction form
    12,101.78/18,154.80 = 4,310.60/x
  3. Step 3: Cross multiply
    12,101.78x = 18,154.80 × 4,310.60
  4. Step 4: Simplify right side
    12,101.78x = 78,258,080.88
  5. Step 5: Solve for x
    x = 78,258,080.88/12,101.78
  6. Step 6: Final answer
    x = 6,466.66

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1.5x scale

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.