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Finding the Fourth Proportional to 17,129.87, 25,697.58 and 5,280.87

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Solution

The fourth proportional to 17,129.87, 25,697.58 and 5,280.87 is: 7,922.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,129.87 : 25,697.58 = 5,280.87 : x
  2. Step 2: Convert to fraction form
    17,129.87/25,697.58 = 5,280.87/x
  3. Step 3: Cross multiply
    17,129.87x = 25,697.58 × 5,280.87
  4. Step 4: Simplify right side
    17,129.87x = 135,705,630.34
  5. Step 5: Solve for x
    x = 135,705,630.34/17,129.87
  6. Step 6: Final answer
    x = 7,922.16

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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.