Home / 11,915.36-16,445.16-6,611.88

Finding the Fourth Proportional to 11,915.36, 16,445.16 and 6,611.88

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Solution

The fourth proportional to 11,915.36, 16,445.16 and 6,611.88 is: 9,125.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.36 : 16,445.16 = 6,611.88 : x
  2. Step 2: Convert to fraction form
    11,915.36/16,445.16 = 6,611.88/x
  3. Step 3: Cross multiply
    11,915.36x = 16,445.16 × 6,611.88
  4. Step 4: Simplify right side
    11,915.36x = 108,733,424.50
  5. Step 5: Solve for x
    x = 108,733,424.50/11,915.36
  6. Step 6: Final answer
    x = 9,125.48

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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.