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Finding the Fourth Proportional to 12,199.40, 16,835.20 and 6,610.40

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Solution

The fourth proportional to 12,199.40, 16,835.20 and 6,610.40 is: 9,122.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,199.40 : 16,835.20 = 6,610.40 : x
  2. Step 2: Convert to fraction form
    12,199.40/16,835.20 = 6,610.40/x
  3. Step 3: Cross multiply
    12,199.40x = 16,835.20 × 6,610.40
  4. Step 4: Simplify right side
    12,199.40x = 111,287,406.08
  5. Step 5: Solve for x
    x = 111,287,406.08/12,199.40
  6. Step 6: Final answer
    x = 9,122.37

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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.