Home / 11,915.33-16,445.12-6,611.86

Finding the Fourth Proportional to 11,915.33, 16,445.12 and 6,611.86

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Solution

The fourth proportional to 11,915.33, 16,445.12 and 6,611.86 is: 9,125.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.33 : 16,445.12 = 6,611.86 : x
  2. Step 2: Convert to fraction form
    11,915.33/16,445.12 = 6,611.86/x
  3. Step 3: Cross multiply
    11,915.33x = 16,445.12 × 6,611.86
  4. Step 4: Simplify right side
    11,915.33x = 108,732,765.43
  5. Step 5: Solve for x
    x = 108,732,765.43/11,915.33
  6. Step 6: Final answer
    x = 9,125.45

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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.