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Finding the Fourth Proportional to 15,676.93, 21,634.46 and 8,603.61

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Solution

The fourth proportional to 15,676.93, 21,634.46 and 8,603.61 is: 11,873.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,676.93 : 21,634.46 = 8,603.61 : x
  2. Step 2: Convert to fraction form
    15,676.93/21,634.46 = 8,603.61/x
  3. Step 3: Cross multiply
    15,676.93x = 21,634.46 × 8,603.61
  4. Step 4: Simplify right side
    15,676.93x = 186,134,456.40
  5. Step 5: Solve for x
    x = 186,134,456.40/15,676.93
  6. Step 6: Final answer
    x = 11,873.14

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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.