Home / 13,346.91-20,020.12-3,986.95

Finding the Fourth Proportional to 13,346.91, 20,020.12 and 3,986.95

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Solution

The fourth proportional to 13,346.91, 20,020.12 and 3,986.95 is: 5,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.91 : 20,020.12 = 3,986.95 : x
  2. Step 2: Convert to fraction form
    13,346.91/20,020.12 = 3,986.95/x
  3. Step 3: Cross multiply
    13,346.91x = 20,020.12 × 3,986.95
  4. Step 4: Simplify right side
    13,346.91x = 79,819,217.43
  5. Step 5: Solve for x
    x = 79,819,217.43/13,346.91
  6. Step 6: Final answer
    x = 5,980.35

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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.