Home / 20,820.35-31,230.24-5,025.24

Finding the Fourth Proportional to 20,820.35, 31,230.24 and 5,025.24

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Solution

The fourth proportional to 20,820.35, 31,230.24 and 5,025.24 is: 7,537.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.35 : 31,230.24 = 5,025.24 : x
  2. Step 2: Convert to fraction form
    20,820.35/31,230.24 = 5,025.24/x
  3. Step 3: Cross multiply
    20,820.35x = 31,230.24 × 5,025.24
  4. Step 4: Simplify right side
    20,820.35x = 156,939,451.26
  5. Step 5: Solve for x
    x = 156,939,451.26/20,820.35
  6. Step 6: Final answer
    x = 7,537.79

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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.