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Finding the Fourth Proportional to 18,835.40, 25,996.41 and 12,462.11

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Solution

The fourth proportional to 18,835.40, 25,996.41 and 12,462.11 is: 17,200.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,835.40 : 25,996.41 = 12,462.11 : x
  2. Step 2: Convert to fraction form
    18,835.40/25,996.41 = 12,462.11/x
  3. Step 3: Cross multiply
    18,835.40x = 25,996.41 × 12,462.11
  4. Step 4: Simplify right side
    18,835.40x = 323,970,121.03
  5. Step 5: Solve for x
    x = 323,970,121.03/18,835.40
  6. Step 6: Final answer
    x = 17,200.07

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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.