Home / 11,915.22-17,870.40-4,517.13

Finding the Fourth Proportional to 11,915.22, 17,870.40 and 4,517.13

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Solution

The fourth proportional to 11,915.22, 17,870.40 and 4,517.13 is: 6,774.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.22 : 17,870.40 = 4,517.13 : x
  2. Step 2: Convert to fraction form
    11,915.22/17,870.40 = 4,517.13/x
  3. Step 3: Cross multiply
    11,915.22x = 17,870.40 × 4,517.13
  4. Step 4: Simplify right side
    11,915.22x = 80,722,919.95
  5. Step 5: Solve for x
    x = 80,722,919.95/11,915.22
  6. Step 6: Final answer
    x = 6,774.77

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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.