Home / 13,740.05-20,609.84-4,379.95

Finding the Fourth Proportional to 13,740.05, 20,609.84 and 4,379.95

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Solution

The fourth proportional to 13,740.05, 20,609.84 and 4,379.95 is: 6,569.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.05 : 20,609.84 = 4,379.95 : x
  2. Step 2: Convert to fraction form
    13,740.05/20,609.84 = 4,379.95/x
  3. Step 3: Cross multiply
    13,740.05x = 20,609.84 × 4,379.95
  4. Step 4: Simplify right side
    13,740.05x = 90,270,028.13
  5. Step 5: Solve for x
    x = 90,270,028.13/13,740.05
  6. Step 6: Final answer
    x = 6,569.85

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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.