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Finding the Fourth Proportional to 26,956.40, 40,435.80 and 9,186.80

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Solution

The fourth proportional to 26,956.40, 40,435.80 and 9,186.80 is: 13,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,956.40 : 40,435.80 = 9,186.80 : x
  2. Step 2: Convert to fraction form
    26,956.40/40,435.80 = 9,186.80/x
  3. Step 3: Cross multiply
    26,956.40x = 40,435.80 × 9,186.80
  4. Step 4: Simplify right side
    26,956.40x = 371,475,607.44
  5. Step 5: Solve for x
    x = 371,475,607.44/26,956.40
  6. Step 6: Final answer
    x = 13,780.61

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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.