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Finding the Fourth Proportional to 11,104.47, 16,648.47 and 6,720.90

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Solution

The fourth proportional to 11,104.47, 16,648.47 and 6,720.90 is: 10,076.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,104.47 : 16,648.47 = 6,720.90 : x
  2. Step 2: Convert to fraction form
    11,104.47/16,648.47 = 6,720.90/x
  3. Step 3: Cross multiply
    11,104.47x = 16,648.47 × 6,720.90
  4. Step 4: Simplify right side
    11,104.47x = 111,892,702.02
  5. Step 5: Solve for x
    x = 111,892,702.02/11,104.47
  6. Step 6: Final answer
    x = 10,076.37

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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.