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Finding the Fourth Proportional to 18,615.42, 27,915.84 and 6,922.26

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Solution

The fourth proportional to 18,615.42, 27,915.84 and 6,922.26 is: 10,380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.42 : 27,915.84 = 6,922.26 : x
  2. Step 2: Convert to fraction form
    18,615.42/27,915.84 = 6,922.26/x
  3. Step 3: Cross multiply
    18,615.42x = 27,915.84 × 6,922.26
  4. Step 4: Simplify right side
    18,615.42x = 193,240,702.60
  5. Step 5: Solve for x
    x = 193,240,702.60/18,615.42
  6. Step 6: Final answer
    x = 10,380.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.