Home / 30,239.80-45,359.82-9,180.04

Finding the Fourth Proportional to 30,239.80, 45,359.82 and 9,180.04

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Solution

The fourth proportional to 30,239.80, 45,359.82 and 9,180.04 is: 13,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,239.80 : 45,359.82 = 9,180.04 : x
  2. Step 2: Convert to fraction form
    30,239.80/45,359.82 = 9,180.04/x
  3. Step 3: Cross multiply
    30,239.80x = 45,359.82 × 9,180.04
  4. Step 4: Simplify right side
    30,239.80x = 416,404,961.99
  5. Step 5: Solve for x
    x = 416,404,961.99/30,239.80
  6. Step 6: Final answer
    x = 13,770.10

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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.