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Finding the Fourth Proportional to 20,103.16, 29,991.52 and 19,014.52

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Solution

The fourth proportional to 20,103.16, 29,991.52 and 19,014.52 is: 28,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.16 : 29,991.52 = 19,014.52 : x
  2. Step 2: Convert to fraction form
    20,103.16/29,991.52 = 19,014.52/x
  3. Step 3: Cross multiply
    20,103.16x = 29,991.52 × 19,014.52
  4. Step 4: Simplify right side
    20,103.16x = 570,274,356.87
  5. Step 5: Solve for x
    x = 570,274,356.87/20,103.16
  6. Step 6: Final answer
    x = 28,367.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.