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Finding the Fourth Proportional to 28,915.78, 43,377.99 and 9,194.98

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Solution

The fourth proportional to 28,915.78, 43,377.99 and 9,194.98 is: 13,793.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.78 : 43,377.99 = 9,194.98 : x
  2. Step 2: Convert to fraction form
    28,915.78/43,377.99 = 9,194.98/x
  3. Step 3: Cross multiply
    28,915.78x = 43,377.99 × 9,194.98
  4. Step 4: Simplify right side
    28,915.78x = 398,859,607.56
  5. Step 5: Solve for x
    x = 398,859,607.56/28,915.78
  6. Step 6: Final answer
    x = 13,793.84

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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.