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Finding the Fourth Proportional to 11,915.95, 16,443.27 and 6,610.66

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Solution

The fourth proportional to 11,915.95, 16,443.27 and 6,610.66 is: 9,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.95 : 16,443.27 = 6,610.66 : x
  2. Step 2: Convert to fraction form
    11,915.95/16,443.27 = 6,610.66/x
  3. Step 3: Cross multiply
    11,915.95x = 16,443.27 × 6,610.66
  4. Step 4: Simplify right side
    11,915.95x = 108,700,867.26
  5. Step 5: Solve for x
    x = 108,700,867.26/11,915.95
  6. Step 6: Final answer
    x = 9,122.30

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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.