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Finding the Fourth Proportional to 26,860.60, 40,290.89 and 8,392.60

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Solution

The fourth proportional to 26,860.60, 40,290.89 and 8,392.60 is: 12,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,860.60 : 40,290.89 = 8,392.60 : x
  2. Step 2: Convert to fraction form
    26,860.60/40,290.89 = 8,392.60/x
  3. Step 3: Cross multiply
    26,860.60x = 40,290.89 × 8,392.60
  4. Step 4: Simplify right side
    26,860.60x = 338,145,323.41
  5. Step 5: Solve for x
    x = 338,145,323.41/26,860.60
  6. Step 6: Final answer
    x = 12,588.90

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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.