Home / 13,990.06-20,985.12-3,601

Finding the Fourth Proportional to 13,990.06, 20,985.12 and 3,601

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Solution

The fourth proportional to 13,990.06, 20,985.12 and 3,601 is: 5,401.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.06 : 20,985.12 = 3,601 : x
  2. Step 2: Convert to fraction form
    13,990.06/20,985.12 = 3,601/x
  3. Step 3: Cross multiply
    13,990.06x = 20,985.12 × 3,601
  4. Step 4: Simplify right side
    13,990.06x = 75,567,417.12
  5. Step 5: Solve for x
    x = 75,567,417.12/13,990.06
  6. Step 6: Final answer
    x = 5,401.51

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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.