Home / 28,911.10-43,366.65-8,131.90

Finding the Fourth Proportional to 28,911.10, 43,366.65 and 8,131.90

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Solution

The fourth proportional to 28,911.10, 43,366.65 and 8,131.90 is: 12,197.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.10 : 43,366.65 = 8,131.90 : x
  2. Step 2: Convert to fraction form
    28,911.10/43,366.65 = 8,131.90/x
  3. Step 3: Cross multiply
    28,911.10x = 43,366.65 × 8,131.90
  4. Step 4: Simplify right side
    28,911.10x = 352,653,261.14
  5. Step 5: Solve for x
    x = 352,653,261.14/28,911.10
  6. Step 6: Final answer
    x = 12,197.85

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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.