Home / 20,004.76-30,007.50-5,212.78

Finding the Fourth Proportional to 20,004.76, 30,007.50 and 5,212.78

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Solution

The fourth proportional to 20,004.76, 30,007.50 and 5,212.78 is: 7,819.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,004.76 : 30,007.50 = 5,212.78 : x
  2. Step 2: Convert to fraction form
    20,004.76/30,007.50 = 5,212.78/x
  3. Step 3: Cross multiply
    20,004.76x = 30,007.50 × 5,212.78
  4. Step 4: Simplify right side
    20,004.76x = 156,422,495.85
  5. Step 5: Solve for x
    x = 156,422,495.85/20,004.76
  6. Step 6: Final answer
    x = 7,819.26

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1.5x scale

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.