Home / 20,693.50-31,059.68-10,839.85

Finding the Fourth Proportional to 20,693.50, 31,059.68 and 10,839.85

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Solution

The fourth proportional to 20,693.50, 31,059.68 and 10,839.85 is: 16,269.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.50 : 31,059.68 = 10,839.85 : x
  2. Step 2: Convert to fraction form
    20,693.50/31,059.68 = 10,839.85/x
  3. Step 3: Cross multiply
    20,693.50x = 31,059.68 × 10,839.85
  4. Step 4: Simplify right side
    20,693.50x = 336,682,272.25
  5. Step 5: Solve for x
    x = 336,682,272.25/20,693.50
  6. Step 6: Final answer
    x = 16,269.95

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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.