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Finding the Fourth Proportional to 18,656.15, 25,747.31 and 13,932.23

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Solution

The fourth proportional to 18,656.15, 25,747.31 and 13,932.23 is: 19,227.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.15 : 25,747.31 = 13,932.23 : x
  2. Step 2: Convert to fraction form
    18,656.15/25,747.31 = 13,932.23/x
  3. Step 3: Cross multiply
    18,656.15x = 25,747.31 × 13,932.23
  4. Step 4: Simplify right side
    18,656.15x = 358,717,444.80
  5. Step 5: Solve for x
    x = 358,717,444.80/18,656.15
  6. Step 6: Final answer
    x = 19,227.84

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