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Finding the Fourth Proportional to 18,997, 26,215.08 and 11,039.16

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Solution

The fourth proportional to 18,997, 26,215.08 and 11,039.16 is: 15,233.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,997 : 26,215.08 = 11,039.16 : x
  2. Step 2: Convert to fraction form
    18,997/26,215.08 = 11,039.16/x
  3. Step 3: Cross multiply
    18,997x = 26,215.08 × 11,039.16
  4. Step 4: Simplify right side
    18,997x = 289,392,462.53
  5. Step 5: Solve for x
    x = 289,392,462.53/18,997
  6. Step 6: Final answer
    x = 15,233.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.