Home / 11,915.91-16,443.38-6,610.61

Finding the Fourth Proportional to 11,915.91, 16,443.38 and 6,610.61

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Solution

The fourth proportional to 11,915.91, 16,443.38 and 6,610.61 is: 9,122.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.91 : 16,443.38 = 6,610.61 : x
  2. Step 2: Convert to fraction form
    11,915.91/16,443.38 = 6,610.61/x
  3. Step 3: Cross multiply
    11,915.91x = 16,443.38 × 6,610.61
  4. Step 4: Simplify right side
    11,915.91x = 108,700,656.99
  5. Step 5: Solve for x
    x = 108,700,656.99/11,915.91
  6. Step 6: Final answer
    x = 9,122.31

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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.