Home / 12,665.93-18,999.12-3,305.38

Finding the Fourth Proportional to 12,665.93, 18,999.12 and 3,305.38

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Solution

The fourth proportional to 12,665.93, 18,999.12 and 3,305.38 is: 4,958.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.93 : 18,999.12 = 3,305.38 : x
  2. Step 2: Convert to fraction form
    12,665.93/18,999.12 = 3,305.38/x
  3. Step 3: Cross multiply
    12,665.93x = 18,999.12 × 3,305.38
  4. Step 4: Simplify right side
    12,665.93x = 62,799,311.27
  5. Step 5: Solve for x
    x = 62,799,311.27/12,665.93
  6. Step 6: Final answer
    x = 4,958.13

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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.