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Finding the Fourth Proportional to 30,327.56, 45,542.46 and 19,815.56

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Solution

The fourth proportional to 30,327.56, 45,542.46 and 19,815.56 is: 29,756.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,327.56 : 45,542.46 = 19,815.56 : x
  2. Step 2: Convert to fraction form
    30,327.56/45,542.46 = 19,815.56/x
  3. Step 3: Cross multiply
    30,327.56x = 45,542.46 × 19,815.56
  4. Step 4: Simplify right side
    30,327.56x = 902,449,348.68
  5. Step 5: Solve for x
    x = 902,449,348.68/30,327.56
  6. Step 6: Final answer
    x = 29,756.74

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1.5x scale

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.