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Finding the Fourth Proportional to 15,137.88, 20,883.54 and 8,847.48

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Solution

The fourth proportional to 15,137.88, 20,883.54 and 8,847.48 is: 12,205.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.88 : 20,883.54 = 8,847.48 : x
  2. Step 2: Convert to fraction form
    15,137.88/20,883.54 = 8,847.48/x
  3. Step 3: Cross multiply
    15,137.88x = 20,883.54 × 8,847.48
  4. Step 4: Simplify right side
    15,137.88x = 184,766,702.48
  5. Step 5: Solve for x
    x = 184,766,702.48/15,137.88
  6. Step 6: Final answer
    x = 12,205.59

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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.