Home / 17,129.21-25,688.35-5,439.70

Finding the Fourth Proportional to 17,129.21, 25,688.35 and 5,439.70

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Solution

The fourth proportional to 17,129.21, 25,688.35 and 5,439.70 is: 8,157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,129.21 : 25,688.35 = 5,439.70 : x
  2. Step 2: Convert to fraction form
    17,129.21/25,688.35 = 5,439.70/x
  3. Step 3: Cross multiply
    17,129.21x = 25,688.35 × 5,439.70
  4. Step 4: Simplify right side
    17,129.21x = 139,736,761.85
  5. Step 5: Solve for x
    x = 139,736,761.85/17,129.21
  6. Step 6: Final answer
    x = 8,157.81

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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.