Home / 20,766.43-31,150.13-7,440.34

Finding the Fourth Proportional to 20,766.43, 31,150.13 and 7,440.34

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Solution

The fourth proportional to 20,766.43, 31,150.13 and 7,440.34 is: 11,160.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.43 : 31,150.13 = 7,440.34 : x
  2. Step 2: Convert to fraction form
    20,766.43/31,150.13 = 7,440.34/x
  3. Step 3: Cross multiply
    20,766.43x = 31,150.13 × 7,440.34
  4. Step 4: Simplify right side
    20,766.43x = 231,767,558.24
  5. Step 5: Solve for x
    x = 231,767,558.24/20,766.43
  6. Step 6: Final answer
    x = 11,160.68

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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.