Home / 11,915.45-16,445.30-6,611.98

Finding the Fourth Proportional to 11,915.45, 16,445.30 and 6,611.98

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Solution

The fourth proportional to 11,915.45, 16,445.30 and 6,611.98 is: 9,125.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.45 : 16,445.30 = 6,611.98 : x
  2. Step 2: Convert to fraction form
    11,915.45/16,445.30 = 6,611.98/x
  3. Step 3: Cross multiply
    11,915.45x = 16,445.30 × 6,611.98
  4. Step 4: Simplify right side
    11,915.45x = 108,735,994.69
  5. Step 5: Solve for x
    x = 108,735,994.69/11,915.45
  6. Step 6: Final answer
    x = 9,125.63

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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.