Home / 20,890.90-31,337.97-6,099.49

Finding the Fourth Proportional to 20,890.90, 31,337.97 and 6,099.49

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Solution

The fourth proportional to 20,890.90, 31,337.97 and 6,099.49 is: 9,149.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.90 : 31,337.97 = 6,099.49 : x
  2. Step 2: Convert to fraction form
    20,890.90/31,337.97 = 6,099.49/x
  3. Step 3: Cross multiply
    20,890.90x = 31,337.97 × 6,099.49
  4. Step 4: Simplify right side
    20,890.90x = 191,145,634.64
  5. Step 5: Solve for x
    x = 191,145,634.64/20,890.90
  6. Step 6: Final answer
    x = 9,149.71

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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.