Home / 28,890.78-43,293.52-13,100.64

Finding the Fourth Proportional to 28,890.78, 43,293.52 and 13,100.64

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Solution

The fourth proportional to 28,890.78, 43,293.52 and 13,100.64 is: 19,631.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.78 : 43,293.52 = 13,100.64 : x
  2. Step 2: Convert to fraction form
    28,890.78/43,293.52 = 13,100.64/x
  3. Step 3: Cross multiply
    28,890.78x = 43,293.52 × 13,100.64
  4. Step 4: Simplify right side
    28,890.78x = 567,172,819.85
  5. Step 5: Solve for x
    x = 567,172,819.85/28,890.78
  6. Step 6: Final answer
    x = 19,631.62

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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.