Home / 13,688.11-20,534.39-5,363.61

Finding the Fourth Proportional to 13,688.11, 20,534.39 and 5,363.61

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Solution

The fourth proportional to 13,688.11, 20,534.39 and 5,363.61 is: 8,046.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.11 : 20,534.39 = 5,363.61 : x
  2. Step 2: Convert to fraction form
    13,688.11/20,534.39 = 5,363.61/x
  3. Step 3: Cross multiply
    13,688.11x = 20,534.39 × 5,363.61
  4. Step 4: Simplify right side
    13,688.11x = 110,138,509.73
  5. Step 5: Solve for x
    x = 110,138,509.73/13,688.11
  6. Step 6: Final answer
    x = 8,046.29

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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.