Home / 28,789.40-43,188.42-9,065.90

Finding the Fourth Proportional to 28,789.40, 43,188.42 and 9,065.90

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Solution

The fourth proportional to 28,789.40, 43,188.42 and 9,065.90 is: 13,600.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,789.40 : 43,188.42 = 9,065.90 : x
  2. Step 2: Convert to fraction form
    28,789.40/43,188.42 = 9,065.90/x
  3. Step 3: Cross multiply
    28,789.40x = 43,188.42 × 9,065.90
  4. Step 4: Simplify right side
    28,789.40x = 391,541,896.88
  5. Step 5: Solve for x
    x = 391,541,896.88/28,789.40
  6. Step 6: Final answer
    x = 13,600.21

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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.