Home / 11,915.12-17,872.80-3,595.21

Finding the Fourth Proportional to 11,915.12, 17,872.80 and 3,595.21

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Solution

The fourth proportional to 11,915.12, 17,872.80 and 3,595.21 is: 5,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.12 : 17,872.80 = 3,595.21 : x
  2. Step 2: Convert to fraction form
    11,915.12/17,872.80 = 3,595.21/x
  3. Step 3: Cross multiply
    11,915.12x = 17,872.80 × 3,595.21
  4. Step 4: Simplify right side
    11,915.12x = 64,256,469.29
  5. Step 5: Solve for x
    x = 64,256,469.29/11,915.12
  6. Step 6: Final answer
    x = 5,392.85

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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.