Home / 12,511.15-18,767.07-4,189.62

Finding the Fourth Proportional to 12,511.15, 18,767.07 and 4,189.62

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Solution

The fourth proportional to 12,511.15, 18,767.07 and 4,189.62 is: 6,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.15 : 18,767.07 = 4,189.62 : x
  2. Step 2: Convert to fraction form
    12,511.15/18,767.07 = 4,189.62/x
  3. Step 3: Cross multiply
    12,511.15x = 18,767.07 × 4,189.62
  4. Step 4: Simplify right side
    12,511.15x = 78,626,891.81
  5. Step 5: Solve for x
    x = 78,626,891.81/12,511.15
  6. Step 6: Final answer
    x = 6,284.55

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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.