Home / 30,819.64-46,221.54-12,100.36

Finding the Fourth Proportional to 30,819.64, 46,221.54 and 12,100.36

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Solution

The fourth proportional to 30,819.64, 46,221.54 and 12,100.36 is: 18,147.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,819.64 : 46,221.54 = 12,100.36 : x
  2. Step 2: Convert to fraction form
    30,819.64/46,221.54 = 12,100.36/x
  3. Step 3: Cross multiply
    30,819.64x = 46,221.54 × 12,100.36
  4. Step 4: Simplify right side
    30,819.64x = 559,297,273.75
  5. Step 5: Solve for x
    x = 559,297,273.75/30,819.64
  6. Step 6: Final answer
    x = 18,147.43

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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.