Home / 12,390.24-18,587.36-4,067.84

Finding the Fourth Proportional to 12,390.24, 18,587.36 and 4,067.84

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Solution

The fourth proportional to 12,390.24, 18,587.36 and 4,067.84 is: 6,102.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.24 : 18,587.36 = 4,067.84 : x
  2. Step 2: Convert to fraction form
    12,390.24/18,587.36 = 4,067.84/x
  3. Step 3: Cross multiply
    12,390.24x = 18,587.36 × 4,067.84
  4. Step 4: Simplify right side
    12,390.24x = 75,610,406.50
  5. Step 5: Solve for x
    x = 75,610,406.50/12,390.24
  6. Step 6: Final answer
    x = 6,102.42

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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.