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Finding the Fourth Proportional to 12,039.93, 18,064.16 and 5,375.81

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Solution

The fourth proportional to 12,039.93, 18,064.16 and 5,375.81 is: 8,065.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.93 : 18,064.16 = 5,375.81 : x
  2. Step 2: Convert to fraction form
    12,039.93/18,064.16 = 5,375.81/x
  3. Step 3: Cross multiply
    12,039.93x = 18,064.16 × 5,375.81
  4. Step 4: Simplify right side
    12,039.93x = 97,109,550.57
  5. Step 5: Solve for x
    x = 97,109,550.57/12,039.93
  6. Step 6: Final answer
    x = 8,065.62

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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.