Home / 20,830.96-31,245.36-7,682.24

Finding the Fourth Proportional to 20,830.96, 31,245.36 and 7,682.24

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Solution

The fourth proportional to 20,830.96, 31,245.36 and 7,682.24 is: 11,522.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.96 : 31,245.36 = 7,682.24 : x
  2. Step 2: Convert to fraction form
    20,830.96/31,245.36 = 7,682.24/x
  3. Step 3: Cross multiply
    20,830.96x = 31,245.36 × 7,682.24
  4. Step 4: Simplify right side
    20,830.96x = 240,034,354.41
  5. Step 5: Solve for x
    x = 240,034,354.41/20,830.96
  6. Step 6: Final answer
    x = 11,522.96

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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.