Home / 12,190.20-16,822.52-6,601.20

Finding the Fourth Proportional to 12,190.20, 16,822.52 and 6,601.20

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Solution

The fourth proportional to 12,190.20, 16,822.52 and 6,601.20 is: 9,109.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.20 : 16,822.52 = 6,601.20 : x
  2. Step 2: Convert to fraction form
    12,190.20/16,822.52 = 6,601.20/x
  3. Step 3: Cross multiply
    12,190.20x = 16,822.52 × 6,601.20
  4. Step 4: Simplify right side
    12,190.20x = 111,048,819.02
  5. Step 5: Solve for x
    x = 111,048,819.02/12,190.20
  6. Step 6: Final answer
    x = 9,109.68

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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.