Home / 20,321.85-30,483.63-7,174.29

Finding the Fourth Proportional to 20,321.85, 30,483.63 and 7,174.29

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Solution

The fourth proportional to 20,321.85, 30,483.63 and 7,174.29 is: 10,761.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.85 : 30,483.63 = 7,174.29 : x
  2. Step 2: Convert to fraction form
    20,321.85/30,483.63 = 7,174.29/x
  3. Step 3: Cross multiply
    20,321.85x = 30,483.63 × 7,174.29
  4. Step 4: Simplify right side
    20,321.85x = 218,698,401.87
  5. Step 5: Solve for x
    x = 218,698,401.87/20,321.85
  6. Step 6: Final answer
    x = 10,761.74

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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.