Home / 12,578.39-18,867.63-3,813.38

Finding the Fourth Proportional to 12,578.39, 18,867.63 and 3,813.38

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Solution

The fourth proportional to 12,578.39, 18,867.63 and 3,813.38 is: 5,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.39 : 18,867.63 = 3,813.38 : x
  2. Step 2: Convert to fraction form
    12,578.39/18,867.63 = 3,813.38/x
  3. Step 3: Cross multiply
    12,578.39x = 18,867.63 × 3,813.38
  4. Step 4: Simplify right side
    12,578.39x = 71,949,433.61
  5. Step 5: Solve for x
    x = 71,949,433.61/12,578.39
  6. Step 6: Final answer
    x = 5,720.08

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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.