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Finding the Fourth Proportional to 12,008.87, 18,015.11 and 5,767.71

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Solution

The fourth proportional to 12,008.87, 18,015.11 and 5,767.71 is: 8,652.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.87 : 18,015.11 = 5,767.71 : x
  2. Step 2: Convert to fraction form
    12,008.87/18,015.11 = 5,767.71/x
  3. Step 3: Cross multiply
    12,008.87x = 18,015.11 × 5,767.71
  4. Step 4: Simplify right side
    12,008.87x = 103,905,930.10
  5. Step 5: Solve for x
    x = 103,905,930.10/12,008.87
  6. Step 6: Final answer
    x = 8,652.43

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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.