Home / 12,456.12-18,680.52-6,609.60

Finding the Fourth Proportional to 12,456.12, 18,680.52 and 6,609.60

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Solution

The fourth proportional to 12,456.12, 18,680.52 and 6,609.60 is: 9,912.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.12 : 18,680.52 = 6,609.60 : x
  2. Step 2: Convert to fraction form
    12,456.12/18,680.52 = 6,609.60/x
  3. Step 3: Cross multiply
    12,456.12x = 18,680.52 × 6,609.60
  4. Step 4: Simplify right side
    12,456.12x = 123,470,764.99
  5. Step 5: Solve for x
    x = 123,470,764.99/12,456.12
  6. Step 6: Final answer
    x = 9,912.46

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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.