Home / 13,817.08-20,721.83-3,819.45

Finding the Fourth Proportional to 13,817.08, 20,721.83 and 3,819.45

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Solution

The fourth proportional to 13,817.08, 20,721.83 and 3,819.45 is: 5,728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.08 : 20,721.83 = 3,819.45 : x
  2. Step 2: Convert to fraction form
    13,817.08/20,721.83 = 3,819.45/x
  3. Step 3: Cross multiply
    13,817.08x = 20,721.83 × 3,819.45
  4. Step 4: Simplify right side
    13,817.08x = 79,146,052.20
  5. Step 5: Solve for x
    x = 79,146,052.20/13,817.08
  6. Step 6: Final answer
    x = 5,728.13

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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.