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Finding the Fourth Proportional to 13,761.99, 20,636.90 and 5,868.14

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Solution

The fourth proportional to 13,761.99, 20,636.90 and 5,868.14 is: 8,799.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.99 : 20,636.90 = 5,868.14 : x
  2. Step 2: Convert to fraction form
    13,761.99/20,636.90 = 5,868.14/x
  3. Step 3: Cross multiply
    13,761.99x = 20,636.90 × 5,868.14
  4. Step 4: Simplify right side
    13,761.99x = 121,100,085.84
  5. Step 5: Solve for x
    x = 121,100,085.84/13,761.99
  6. Step 6: Final answer
    x = 8,799.61

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1.5x scale

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.