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Finding the Fourth Proportional to 26,857.60, 40,243.20 and 16,979.20

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Solution

The fourth proportional to 26,857.60, 40,243.20 and 16,979.20 is: 25,441.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,857.60 : 40,243.20 = 16,979.20 : x
  2. Step 2: Convert to fraction form
    26,857.60/40,243.20 = 16,979.20/x
  3. Step 3: Cross multiply
    26,857.60x = 40,243.20 × 16,979.20
  4. Step 4: Simplify right side
    26,857.60x = 683,297,341.44
  5. Step 5: Solve for x
    x = 683,297,341.44/26,857.60
  6. Step 6: Final answer
    x = 25,441.49

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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.