Home / 13,793.76-20,690.64-3,405.51

Finding the Fourth Proportional to 13,793.76, 20,690.64 and 3,405.51

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Solution

The fourth proportional to 13,793.76, 20,690.64 and 3,405.51 is: 5,108.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.76 : 20,690.64 = 3,405.51 : x
  2. Step 2: Convert to fraction form
    13,793.76/20,690.64 = 3,405.51/x
  3. Step 3: Cross multiply
    13,793.76x = 20,690.64 × 3,405.51
  4. Step 4: Simplify right side
    13,793.76x = 70,462,181.43
  5. Step 5: Solve for x
    x = 70,462,181.43/13,793.76
  6. Step 6: Final answer
    x = 5,108.27

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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.