Home / 11,915.04-16,436.88-9,679.44

Finding the Fourth Proportional to 11,915.04, 16,436.88 and 9,679.44

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Solution

The fourth proportional to 11,915.04, 16,436.88 and 9,679.44 is: 13,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.04 : 16,436.88 = 9,679.44 : x
  2. Step 2: Convert to fraction form
    11,915.04/16,436.88 = 9,679.44/x
  3. Step 3: Cross multiply
    11,915.04x = 16,436.88 × 9,679.44
  4. Step 4: Simplify right side
    11,915.04x = 159,099,793.75
  5. Step 5: Solve for x
    x = 159,099,793.75/11,915.04
  6. Step 6: Final answer
    x = 13,352.85

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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.