Home / 13,691.42-18,877.03-11,426.03

Finding the Fourth Proportional to 13,691.42, 18,877.03 and 11,426.03

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Solution

The fourth proportional to 13,691.42, 18,877.03 and 11,426.03 is: 15,753.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.42 : 18,877.03 = 11,426.03 : x
  2. Step 2: Convert to fraction form
    13,691.42/18,877.03 = 11,426.03/x
  3. Step 3: Cross multiply
    13,691.42x = 18,877.03 × 11,426.03
  4. Step 4: Simplify right side
    13,691.42x = 215,689,511.09
  5. Step 5: Solve for x
    x = 215,689,511.09/13,691.42
  6. Step 6: Final answer
    x = 15,753.63

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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.