Home / 28,869.20-43,308.15-12,229.30

Finding the Fourth Proportional to 28,869.20, 43,308.15 and 12,229.30

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Solution

The fourth proportional to 28,869.20, 43,308.15 and 12,229.30 is: 18,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.20 : 43,308.15 = 12,229.30 : x
  2. Step 2: Convert to fraction form
    28,869.20/43,308.15 = 12,229.30/x
  3. Step 3: Cross multiply
    28,869.20x = 43,308.15 × 12,229.30
  4. Step 4: Simplify right side
    28,869.20x = 529,628,358.80
  5. Step 5: Solve for x
    x = 529,628,358.80/28,869.20
  6. Step 6: Final answer
    x = 18,345.79

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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.