Home / 20,821.35-31,231.74-5,026.24

Finding the Fourth Proportional to 20,821.35, 31,231.74 and 5,026.24

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Solution

The fourth proportional to 20,821.35, 31,231.74 and 5,026.24 is: 7,539.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821.35 : 31,231.74 = 5,026.24 : x
  2. Step 2: Convert to fraction form
    20,821.35/31,231.74 = 5,026.24/x
  3. Step 3: Cross multiply
    20,821.35x = 31,231.74 × 5,026.24
  4. Step 4: Simplify right side
    20,821.35x = 156,978,220.86
  5. Step 5: Solve for x
    x = 156,978,220.86/20,821.35
  6. Step 6: Final answer
    x = 7,539.29

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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.