Home / 17,122.20-25,686.70-8,357.28

Finding the Fourth Proportional to 17,122.20, 25,686.70 and 8,357.28

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Solution

The fourth proportional to 17,122.20, 25,686.70 and 8,357.28 is: 12,537.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,122.20 : 25,686.70 = 8,357.28 : x
  2. Step 2: Convert to fraction form
    17,122.20/25,686.70 = 8,357.28/x
  3. Step 3: Cross multiply
    17,122.20x = 25,686.70 × 8,357.28
  4. Step 4: Simplify right side
    17,122.20x = 214,670,944.18
  5. Step 5: Solve for x
    x = 214,670,944.18/17,122.20
  6. Step 6: Final answer
    x = 12,537.58

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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.