Home / 28,900.20-43,350.30-9,180.30

Finding the Fourth Proportional to 28,900.20, 43,350.30 and 9,180.30

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Solution

The fourth proportional to 28,900.20, 43,350.30 and 9,180.30 is: 13,770.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,900.20 : 43,350.30 = 9,180.30 : x
  2. Step 2: Convert to fraction form
    28,900.20/43,350.30 = 9,180.30/x
  3. Step 3: Cross multiply
    28,900.20x = 43,350.30 × 9,180.30
  4. Step 4: Simplify right side
    28,900.20x = 397,968,759.09
  5. Step 5: Solve for x
    x = 397,968,759.09/28,900.20
  6. Step 6: Final answer
    x = 13,770.45

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Similar ratio
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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.