Home / 11,915.85-16,424.06-8,372.91

Finding the Fourth Proportional to 11,915.85, 16,424.06 and 8,372.91

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Solution

The fourth proportional to 11,915.85, 16,424.06 and 8,372.91 is: 11,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.85 : 16,424.06 = 8,372.91 : x
  2. Step 2: Convert to fraction form
    11,915.85/16,424.06 = 8,372.91/x
  3. Step 3: Cross multiply
    11,915.85x = 16,424.06 × 8,372.91
  4. Step 4: Simplify right side
    11,915.85x = 137,517,134.35
  5. Step 5: Solve for x
    x = 137,517,134.35/11,915.85
  6. Step 6: Final answer
    x = 11,540.69

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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.