Home / 13,306.70-19,965.35-5,409.80

Finding the Fourth Proportional to 13,306.70, 19,965.35 and 5,409.80

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Solution

The fourth proportional to 13,306.70, 19,965.35 and 5,409.80 is: 8,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.70 : 19,965.35 = 5,409.80 : x
  2. Step 2: Convert to fraction form
    13,306.70/19,965.35 = 5,409.80/x
  3. Step 3: Cross multiply
    13,306.70x = 19,965.35 × 5,409.80
  4. Step 4: Simplify right side
    13,306.70x = 108,008,613.87
  5. Step 5: Solve for x
    x = 108,008,613.87/13,306.70
  6. Step 6: Final answer
    x = 8,116.86

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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.