Home / 26,972.80-40,449.60-12,188.80

Finding the Fourth Proportional to 26,972.80, 40,449.60 and 12,188.80

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Solution

The fourth proportional to 26,972.80, 40,449.60 and 12,188.80 is: 18,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,972.80 : 40,449.60 = 12,188.80 : x
  2. Step 2: Convert to fraction form
    26,972.80/40,449.60 = 12,188.80/x
  3. Step 3: Cross multiply
    26,972.80x = 40,449.60 × 12,188.80
  4. Step 4: Simplify right side
    26,972.80x = 493,032,084.48
  5. Step 5: Solve for x
    x = 493,032,084.48/26,972.80
  6. Step 6: Final answer
    x = 18,278.86

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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.