Home / 20,704.74-28,572.84-11,273.28

Finding the Fourth Proportional to 20,704.74, 28,572.84 and 11,273.28

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Solution

The fourth proportional to 20,704.74, 28,572.84 and 11,273.28 is: 15,557.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.74 : 28,572.84 = 11,273.28 : x
  2. Step 2: Convert to fraction form
    20,704.74/28,572.84 = 11,273.28/x
  3. Step 3: Cross multiply
    20,704.74x = 28,572.84 × 11,273.28
  4. Step 4: Simplify right side
    20,704.74x = 322,109,625.72
  5. Step 5: Solve for x
    x = 322,109,625.72/20,704.74
  6. Step 6: Final answer
    x = 15,557.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.