Home / 11,915.39-16,445.21-6,611.91

Finding the Fourth Proportional to 11,915.39, 16,445.21 and 6,611.91

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Solution

The fourth proportional to 11,915.39, 16,445.21 and 6,611.91 is: 9,125.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.39 : 16,445.21 = 6,611.91 : x
  2. Step 2: Convert to fraction form
    11,915.39/16,445.21 = 6,611.91/x
  3. Step 3: Cross multiply
    11,915.39x = 16,445.21 × 6,611.91
  4. Step 4: Simplify right side
    11,915.39x = 108,734,283.42
  5. Step 5: Solve for x
    x = 108,734,283.42/11,915.39
  6. Step 6: Final answer
    x = 9,125.54

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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.