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Finding the Fourth Proportional to 20,372.00, 30,510.61 and 19,811.43

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Solution

The fourth proportional to 20,372.00, 30,510.61 and 19,811.43 is: 29,671.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.00 : 30,510.61 = 19,811.43 : x
  2. Step 2: Convert to fraction form
    20,372.00/30,510.61 = 19,811.43/x
  3. Step 3: Cross multiply
    20,372.00x = 30,510.61 × 19,811.43
  4. Step 4: Simplify right side
    20,372.00x = 604,458,764.74
  5. Step 5: Solve for x
    x = 604,458,764.74/20,372.00
  6. Step 6: Final answer
    x = 29,671.06

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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.