Home / 12,270.15-18,406.04-7,371.27

Finding the Fourth Proportional to 12,270.15, 18,406.04 and 7,371.27

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Solution

The fourth proportional to 12,270.15, 18,406.04 and 7,371.27 is: 11,057.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.15 : 18,406.04 = 7,371.27 : x
  2. Step 2: Convert to fraction form
    12,270.15/18,406.04 = 7,371.27/x
  3. Step 3: Cross multiply
    12,270.15x = 18,406.04 × 7,371.27
  4. Step 4: Simplify right side
    12,270.15x = 135,675,853.61
  5. Step 5: Solve for x
    x = 135,675,853.61/12,270.15
  6. Step 6: Final answer
    x = 11,057.39

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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.