Home / 13,814.46-20,721.69-3,426.21

Finding the Fourth Proportional to 13,814.46, 20,721.69 and 3,426.21

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Solution

The fourth proportional to 13,814.46, 20,721.69 and 3,426.21 is: 5,139.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,814.46 : 20,721.69 = 3,426.21 : x
  2. Step 2: Convert to fraction form
    13,814.46/20,721.69 = 3,426.21/x
  3. Step 3: Cross multiply
    13,814.46x = 20,721.69 × 3,426.21
  4. Step 4: Simplify right side
    13,814.46x = 70,996,861.49
  5. Step 5: Solve for x
    x = 70,996,861.49/13,814.46
  6. Step 6: Final answer
    x = 5,139.32

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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.