Home / 20,004.18-30,005.47-5,213.22

Finding the Fourth Proportional to 20,004.18, 30,005.47 and 5,213.22

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Solution

The fourth proportional to 20,004.18, 30,005.47 and 5,213.22 is: 7,819.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,004.18 : 30,005.47 = 5,213.22 : x
  2. Step 2: Convert to fraction form
    20,004.18/30,005.47 = 5,213.22/x
  3. Step 3: Cross multiply
    20,004.18x = 30,005.47 × 5,213.22
  4. Step 4: Simplify right side
    20,004.18x = 156,425,116.31
  5. Step 5: Solve for x
    x = 156,425,116.31/20,004.18
  6. Step 6: Final answer
    x = 7,819.62

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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.