Home / 20,837.78-28,755.03-11,404.52

Finding the Fourth Proportional to 20,837.78, 28,755.03 and 11,404.52

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Solution

The fourth proportional to 20,837.78, 28,755.03 and 11,404.52 is: 15,737.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.78 : 28,755.03 = 11,404.52 : x
  2. Step 2: Convert to fraction form
    20,837.78/28,755.03 = 11,404.52/x
  3. Step 3: Cross multiply
    20,837.78x = 28,755.03 × 11,404.52
  4. Step 4: Simplify right side
    20,837.78x = 327,937,314.74
  5. Step 5: Solve for x
    x = 327,937,314.74/20,837.78
  6. Step 6: Final answer
    x = 15,737.63

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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.