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Finding the Fourth Proportional to 26,999.30, 40,511.10 and 12,200.60

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Solution

The fourth proportional to 26,999.30, 40,511.10 and 12,200.60 is: 18,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,999.30 : 40,511.10 = 12,200.60 : x
  2. Step 2: Convert to fraction form
    26,999.30/40,511.10 = 12,200.60/x
  3. Step 3: Cross multiply
    26,999.30x = 40,511.10 × 12,200.60
  4. Step 4: Simplify right side
    26,999.30x = 494,259,726.66
  5. Step 5: Solve for x
    x = 494,259,726.66/26,999.30
  6. Step 6: Final answer
    x = 18,306.39

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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.