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Finding the Fourth Proportional to 15,546.14, 21,453.13 and 8,472.42

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Solution

The fourth proportional to 15,546.14, 21,453.13 and 8,472.42 is: 11,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,546.14 : 21,453.13 = 8,472.42 : x
  2. Step 2: Convert to fraction form
    15,546.14/21,453.13 = 8,472.42/x
  3. Step 3: Cross multiply
    15,546.14x = 21,453.13 × 8,472.42
  4. Step 4: Simplify right side
    15,546.14x = 181,759,927.67
  5. Step 5: Solve for x
    x = 181,759,927.67/15,546.14
  6. Step 6: Final answer
    x = 11,691.64

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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.