Home / 12,578.51-18,867.45-3,218.56

Finding the Fourth Proportional to 12,578.51, 18,867.45 and 3,218.56

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Solution

The fourth proportional to 12,578.51, 18,867.45 and 3,218.56 is: 4,827.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.51 : 18,867.45 = 3,218.56 : x
  2. Step 2: Convert to fraction form
    12,578.51/18,867.45 = 3,218.56/x
  3. Step 3: Cross multiply
    12,578.51x = 18,867.45 × 3,218.56
  4. Step 4: Simplify right side
    12,578.51x = 60,725,984.77
  5. Step 5: Solve for x
    x = 60,725,984.77/12,578.51
  6. Step 6: Final answer
    x = 4,827.76

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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.