Home / 12,435.89-18,655.85-3,671.69

Finding the Fourth Proportional to 12,435.89, 18,655.85 and 3,671.69

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Solution

The fourth proportional to 12,435.89, 18,655.85 and 3,671.69 is: 5,508.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.89 : 18,655.85 = 3,671.69 : x
  2. Step 2: Convert to fraction form
    12,435.89/18,655.85 = 3,671.69/x
  3. Step 3: Cross multiply
    12,435.89x = 18,655.85 × 3,671.69
  4. Step 4: Simplify right side
    12,435.89x = 68,498,413.79
  5. Step 5: Solve for x
    x = 68,498,413.79/12,435.89
  6. Step 6: Final answer
    x = 5,508.13

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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.