Home / 11,311.40-16,963.86-3,915.56

Finding the Fourth Proportional to 11,311.40, 16,963.86 and 3,915.56

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Solution

The fourth proportional to 11,311.40, 16,963.86 and 3,915.56 is: 5,872.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,311.40 : 16,963.86 = 3,915.56 : x
  2. Step 2: Convert to fraction form
    11,311.40/16,963.86 = 3,915.56/x
  3. Step 3: Cross multiply
    11,311.40x = 16,963.86 × 3,915.56
  4. Step 4: Simplify right side
    11,311.40x = 66,423,011.66
  5. Step 5: Solve for x
    x = 66,423,011.66/11,311.40
  6. Step 6: Final answer
    x = 5,872.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.