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Finding the Fourth Proportional to 20,151.86, 27,810.51 and 11,199.52

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Solution

The fourth proportional to 20,151.86, 27,810.51 and 11,199.52 is: 15,455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.86 : 27,810.51 = 11,199.52 : x
  2. Step 2: Convert to fraction form
    20,151.86/27,810.51 = 11,199.52/x
  3. Step 3: Cross multiply
    20,151.86x = 27,810.51 × 11,199.52
  4. Step 4: Simplify right side
    20,151.86x = 311,464,293.78
  5. Step 5: Solve for x
    x = 311,464,293.78/20,151.86
  6. Step 6: Final answer
    x = 15,455.86

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