Home / 12,775.20-19,162.80-8,346.60

Finding the Fourth Proportional to 12,775.20, 19,162.80 and 8,346.60

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Solution

The fourth proportional to 12,775.20, 19,162.80 and 8,346.60 is: 12,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.20 : 19,162.80 = 8,346.60 : x
  2. Step 2: Convert to fraction form
    12,775.20/19,162.80 = 8,346.60/x
  3. Step 3: Cross multiply
    12,775.20x = 19,162.80 × 8,346.60
  4. Step 4: Simplify right side
    12,775.20x = 159,944,226.48
  5. Step 5: Solve for x
    x = 159,944,226.48/12,775.20
  6. Step 6: Final answer
    x = 12,519.90

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Similar ratio
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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.