Home / 20,003.57-30,005.34-5,212.45

Finding the Fourth Proportional to 20,003.57, 30,005.34 and 5,212.45

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Solution

The fourth proportional to 20,003.57, 30,005.34 and 5,212.45 is: 7,818.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.57 : 30,005.34 = 5,212.45 : x
  2. Step 2: Convert to fraction form
    20,003.57/30,005.34 = 5,212.45/x
  3. Step 3: Cross multiply
    20,003.57x = 30,005.34 × 5,212.45
  4. Step 4: Simplify right side
    20,003.57x = 156,401,334.48
  5. Step 5: Solve for x
    x = 156,401,334.48/20,003.57
  6. Step 6: Final answer
    x = 7,818.67

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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.