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Finding the Fourth Proportional to 12,766.60, 19,112.10 and 9,494.20

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Solution

The fourth proportional to 12,766.60, 19,112.10 and 9,494.20 is: 14,213.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,766.60 : 19,112.10 = 9,494.20 : x
  2. Step 2: Convert to fraction form
    12,766.60/19,112.10 = 9,494.20/x
  3. Step 3: Cross multiply
    12,766.60x = 19,112.10 × 9,494.20
  4. Step 4: Simplify right side
    12,766.60x = 181,454,099.82
  5. Step 5: Solve for x
    x = 181,454,099.82/12,766.60
  6. Step 6: Final answer
    x = 14,213.19

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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.