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Finding the Fourth Proportional to 26,871.60, 40,307.20 and 8,151.60

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Solution

The fourth proportional to 26,871.60, 40,307.20 and 8,151.60 is: 12,227.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,871.60 : 40,307.20 = 8,151.60 : x
  2. Step 2: Convert to fraction form
    26,871.60/40,307.20 = 8,151.60/x
  3. Step 3: Cross multiply
    26,871.60x = 40,307.20 × 8,151.60
  4. Step 4: Simplify right side
    26,871.60x = 328,568,171.52
  5. Step 5: Solve for x
    x = 328,568,171.52/26,871.60
  6. Step 6: Final answer
    x = 12,227.34

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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.