Home / 12,578.69-18,854.80-4,250.81

Finding the Fourth Proportional to 12,578.69, 18,854.80 and 4,250.81

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Solution

The fourth proportional to 12,578.69, 18,854.80 and 4,250.81 is: 6,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.69 : 18,854.80 = 4,250.81 : x
  2. Step 2: Convert to fraction form
    12,578.69/18,854.80 = 4,250.81/x
  3. Step 3: Cross multiply
    12,578.69x = 18,854.80 × 4,250.81
  4. Step 4: Simplify right side
    12,578.69x = 80,148,172.39
  5. Step 5: Solve for x
    x = 80,148,172.39/12,578.69
  6. Step 6: Final answer
    x = 6,371.74

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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.