Home / 12,511.11-18,763.92-4,192.31

Finding the Fourth Proportional to 12,511.11, 18,763.92 and 4,192.31

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Solution

The fourth proportional to 12,511.11, 18,763.92 and 4,192.31 is: 6,287.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.11 : 18,763.92 = 4,192.31 : x
  2. Step 2: Convert to fraction form
    12,511.11/18,763.92 = 4,192.31/x
  3. Step 3: Cross multiply
    12,511.11x = 18,763.92 × 4,192.31
  4. Step 4: Simplify right side
    12,511.11x = 78,664,086.12
  5. Step 5: Solve for x
    x = 78,664,086.12/12,511.11
  6. Step 6: Final answer
    x = 6,287.54

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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.