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Finding the Fourth Proportional to 12,442.61, 18,659.05 and 5,512.25

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Solution

The fourth proportional to 12,442.61, 18,659.05 and 5,512.25 is: 8,266.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.61 : 18,659.05 = 5,512.25 : x
  2. Step 2: Convert to fraction form
    12,442.61/18,659.05 = 5,512.25/x
  3. Step 3: Cross multiply
    12,442.61x = 18,659.05 × 5,512.25
  4. Step 4: Simplify right side
    12,442.61x = 102,853,348.36
  5. Step 5: Solve for x
    x = 102,853,348.36/12,442.61
  6. Step 6: Final answer
    x = 8,266.22

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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.