Home / 12,189.44-16,821.36-6,600.40

Finding the Fourth Proportional to 12,189.44, 16,821.36 and 6,600.40

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Solution

The fourth proportional to 12,189.44, 16,821.36 and 6,600.40 is: 9,108.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.44 : 16,821.36 = 6,600.40 : x
  2. Step 2: Convert to fraction form
    12,189.44/16,821.36 = 6,600.40/x
  3. Step 3: Cross multiply
    12,189.44x = 16,821.36 × 6,600.40
  4. Step 4: Simplify right side
    12,189.44x = 111,027,704.54
  5. Step 5: Solve for x
    x = 111,027,704.54/12,189.44
  6. Step 6: Final answer
    x = 9,108.52

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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.