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Finding the Fourth Proportional to 13,660.71, 20,491.26 and 3,799.77

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Solution

The fourth proportional to 13,660.71, 20,491.26 and 3,799.77 is: 5,699.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.71 : 20,491.26 = 3,799.77 : x
  2. Step 2: Convert to fraction form
    13,660.71/20,491.26 = 3,799.77/x
  3. Step 3: Cross multiply
    13,660.71x = 20,491.26 × 3,799.77
  4. Step 4: Simplify right side
    13,660.71x = 77,862,075.01
  5. Step 5: Solve for x
    x = 77,862,075.01/13,660.71
  6. Step 6: Final answer
    x = 5,699.71

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Similar ratio
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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.