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Finding the Fourth Proportional to 27,388.55, 37,786.11 and 17,969.87

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Solution

The fourth proportional to 27,388.55, 37,786.11 and 17,969.87 is: 24,791.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,388.55 : 37,786.11 = 17,969.87 : x
  2. Step 2: Convert to fraction form
    27,388.55/37,786.11 = 17,969.87/x
  3. Step 3: Cross multiply
    27,388.55x = 37,786.11 × 17,969.87
  4. Step 4: Simplify right side
    27,388.55x = 679,011,484.51
  5. Step 5: Solve for x
    x = 679,011,484.51/27,388.55
  6. Step 6: Final answer
    x = 24,791.80

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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.