Home / 30,327.80-45,443.10-19,214.60

Finding the Fourth Proportional to 30,327.80, 45,443.10 and 19,214.60

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Solution

The fourth proportional to 30,327.80, 45,443.10 and 19,214.60 is: 28,791.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,327.80 : 45,443.10 = 19,214.60 : x
  2. Step 2: Convert to fraction form
    30,327.80/45,443.10 = 19,214.60/x
  3. Step 3: Cross multiply
    30,327.80x = 45,443.10 × 19,214.60
  4. Step 4: Simplify right side
    30,327.80x = 873,170,989.26
  5. Step 5: Solve for x
    x = 873,170,989.26/30,327.80
  6. Step 6: Final answer
    x = 28,791.11

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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.