Home / 20,693.35-31,028.68-8,200.72

Finding the Fourth Proportional to 20,693.35, 31,028.68 and 8,200.72

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Solution

The fourth proportional to 20,693.35, 31,028.68 and 8,200.72 is: 12,296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.35 : 31,028.68 = 8,200.72 : x
  2. Step 2: Convert to fraction form
    20,693.35/31,028.68 = 8,200.72/x
  3. Step 3: Cross multiply
    20,693.35x = 31,028.68 × 8,200.72
  4. Step 4: Simplify right side
    20,693.35x = 254,457,516.65
  5. Step 5: Solve for x
    x = 254,457,516.65/20,693.35
  6. Step 6: Final answer
    x = 12,296.58

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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.