Home / 12,766.20-19,149.39-4,001.28

Finding the Fourth Proportional to 12,766.20, 19,149.39 and 4,001.28

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Solution

The fourth proportional to 12,766.20, 19,149.39 and 4,001.28 is: 6,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,766.20 : 19,149.39 = 4,001.28 : x
  2. Step 2: Convert to fraction form
    12,766.20/19,149.39 = 4,001.28/x
  3. Step 3: Cross multiply
    12,766.20x = 19,149.39 × 4,001.28
  4. Step 4: Simplify right side
    12,766.20x = 76,622,071.22
  5. Step 5: Solve for x
    x = 76,622,071.22/12,766.20
  6. Step 6: Final answer
    x = 6,001.95

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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.