Home / 11,915.90-16,443.84-6,610.76

Finding the Fourth Proportional to 11,915.90, 16,443.84 and 6,610.76

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Solution

The fourth proportional to 11,915.90, 16,443.84 and 6,610.76 is: 9,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.90 : 16,443.84 = 6,610.76 : x
  2. Step 2: Convert to fraction form
    11,915.90/16,443.84 = 6,610.76/x
  3. Step 3: Cross multiply
    11,915.90x = 16,443.84 × 6,610.76
  4. Step 4: Simplify right side
    11,915.90x = 108,706,279.72
  5. Step 5: Solve for x
    x = 108,706,279.72/11,915.90
  6. Step 6: Final answer
    x = 9,122.79

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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.