Home / 13,815.61-20,724.77-5,493.76

Finding the Fourth Proportional to 13,815.61, 20,724.77 and 5,493.76

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Solution

The fourth proportional to 13,815.61, 20,724.77 and 5,493.76 is: 8,241.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.61 : 20,724.77 = 5,493.76 : x
  2. Step 2: Convert to fraction form
    13,815.61/20,724.77 = 5,493.76/x
  3. Step 3: Cross multiply
    13,815.61x = 20,724.77 × 5,493.76
  4. Step 4: Simplify right side
    13,815.61x = 113,856,781.34
  5. Step 5: Solve for x
    x = 113,856,781.34/13,815.61
  6. Step 6: Final answer
    x = 8,241.17

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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.