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Finding the Fourth Proportional to 18,260.68, 27,388.89 and 5,114.11

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Solution

The fourth proportional to 18,260.68, 27,388.89 and 5,114.11 is: 7,670.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,260.68 : 27,388.89 = 5,114.11 : x
  2. Step 2: Convert to fraction form
    18,260.68/27,388.89 = 5,114.11/x
  3. Step 3: Cross multiply
    18,260.68x = 27,388.89 × 5,114.11
  4. Step 4: Simplify right side
    18,260.68x = 140,069,727.77
  5. Step 5: Solve for x
    x = 140,069,727.77/18,260.68
  6. Step 6: Final answer
    x = 7,670.57

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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.