Home / 28,869.90-43,310.52-12,229.80

Finding the Fourth Proportional to 28,869.90, 43,310.52 and 12,229.80

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Solution

The fourth proportional to 28,869.90, 43,310.52 and 12,229.80 is: 18,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.90 : 43,310.52 = 12,229.80 : x
  2. Step 2: Convert to fraction form
    28,869.90/43,310.52 = 12,229.80/x
  3. Step 3: Cross multiply
    28,869.90x = 43,310.52 × 12,229.80
  4. Step 4: Simplify right side
    28,869.90x = 529,678,997.50
  5. Step 5: Solve for x
    x = 529,678,997.50/28,869.90
  6. Step 6: Final answer
    x = 18,347.10

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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.