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Finding the Fourth Proportional to 20,412.52, 30,620.70 and 7,933.50

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Solution

The fourth proportional to 20,412.52, 30,620.70 and 7,933.50 is: 11,901.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.52 : 30,620.70 = 7,933.50 : x
  2. Step 2: Convert to fraction form
    20,412.52/30,620.70 = 7,933.50/x
  3. Step 3: Cross multiply
    20,412.52x = 30,620.70 × 7,933.50
  4. Step 4: Simplify right side
    20,412.52x = 242,929,323.45
  5. Step 5: Solve for x
    x = 242,929,323.45/20,412.52
  6. Step 6: Final answer
    x = 11,901.00

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.