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Finding the Fourth Proportional to 19,395, 26,765.10 and 11,943

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Solution

The fourth proportional to 19,395, 26,765.10 and 11,943 is: 16,481.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,395 : 26,765.10 = 11,943 : x
  2. Step 2: Convert to fraction form
    19,395/26,765.10 = 11,943/x
  3. Step 3: Cross multiply
    19,395x = 26,765.10 × 11,943
  4. Step 4: Simplify right side
    19,395x = 319,655,589.30
  5. Step 5: Solve for x
    x = 319,655,589.30/19,395
  6. Step 6: Final answer
    x = 16,481.34

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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.