Home / 20,003.18-30,003.98-5,212.22

Finding the Fourth Proportional to 20,003.18, 30,003.98 and 5,212.22

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Solution

The fourth proportional to 20,003.18, 30,003.98 and 5,212.22 is: 7,818.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.18 : 30,003.98 = 5,212.22 : x
  2. Step 2: Convert to fraction form
    20,003.18/30,003.98 = 5,212.22/x
  3. Step 3: Cross multiply
    20,003.18x = 30,003.98 × 5,212.22
  4. Step 4: Simplify right side
    20,003.18x = 156,387,168.55
  5. Step 5: Solve for x
    x = 156,387,168.55/20,003.18
  6. Step 6: Final answer
    x = 7,818.12

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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.