Home / 13,717.45-20,577.39-3,856.81

Finding the Fourth Proportional to 13,717.45, 20,577.39 and 3,856.81

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Solution

The fourth proportional to 13,717.45, 20,577.39 and 3,856.81 is: 5,785.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.45 : 20,577.39 = 3,856.81 : x
  2. Step 2: Convert to fraction form
    13,717.45/20,577.39 = 3,856.81/x
  3. Step 3: Cross multiply
    13,717.45x = 20,577.39 × 3,856.81
  4. Step 4: Simplify right side
    13,717.45x = 79,363,064.24
  5. Step 5: Solve for x
    x = 79,363,064.24/13,717.45
  6. Step 6: Final answer
    x = 5,785.56

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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.