Home / 20,190.47-30,285.90-5,401.49

Finding the Fourth Proportional to 20,190.47, 30,285.90 and 5,401.49

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Solution

The fourth proportional to 20,190.47, 30,285.90 and 5,401.49 is: 8,102.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.47 : 30,285.90 = 5,401.49 : x
  2. Step 2: Convert to fraction form
    20,190.47/30,285.90 = 5,401.49/x
  3. Step 3: Cross multiply
    20,190.47x = 30,285.90 × 5,401.49
  4. Step 4: Simplify right side
    20,190.47x = 163,588,834.56
  5. Step 5: Solve for x
    x = 163,588,834.56/20,190.47
  6. Step 6: Final answer
    x = 8,102.28

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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.