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Finding the Fourth Proportional to 13,817.71, 20,726.57 and 3,429.46

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Solution

The fourth proportional to 13,817.71, 20,726.57 and 3,429.46 is: 5,144.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.71 : 20,726.57 = 3,429.46 : x
  2. Step 2: Convert to fraction form
    13,817.71/20,726.57 = 3,429.46/x
  3. Step 3: Cross multiply
    13,817.71x = 20,726.57 × 3,429.46
  4. Step 4: Simplify right side
    13,817.71x = 71,080,942.75
  5. Step 5: Solve for x
    x = 71,080,942.75/13,817.71
  6. Step 6: Final answer
    x = 5,144.19

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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.