Home / 28,886.40-43,329.60-8,109.90

Finding the Fourth Proportional to 28,886.40, 43,329.60 and 8,109.90

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Solution

The fourth proportional to 28,886.40, 43,329.60 and 8,109.90 is: 12,164.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.40 : 43,329.60 = 8,109.90 : x
  2. Step 2: Convert to fraction form
    28,886.40/43,329.60 = 8,109.90/x
  3. Step 3: Cross multiply
    28,886.40x = 43,329.60 × 8,109.90
  4. Step 4: Simplify right side
    28,886.40x = 351,398,723.04
  5. Step 5: Solve for x
    x = 351,398,723.04/28,886.40
  6. Step 6: Final answer
    x = 12,164.85

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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.