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Finding the Fourth Proportional to 11,915.73, 16,443.73 and 6,610.55

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Solution

The fourth proportional to 11,915.73, 16,443.73 and 6,610.55 is: 9,122.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.73 : 16,443.73 = 6,610.55 : x
  2. Step 2: Convert to fraction form
    11,915.73/16,443.73 = 6,610.55/x
  3. Step 3: Cross multiply
    11,915.73x = 16,443.73 × 6,610.55
  4. Step 4: Simplify right side
    11,915.73x = 108,702,041.72
  5. Step 5: Solve for x
    x = 108,702,041.72/11,915.73
  6. Step 6: Final answer
    x = 9,122.57

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1.5x scale

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.