Home / 20,709.11-31,069.71-6,668.82

Finding the Fourth Proportional to 20,709.11, 31,069.71 and 6,668.82

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Solution

The fourth proportional to 20,709.11, 31,069.71 and 6,668.82 is: 10,005.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.11 : 31,069.71 = 6,668.82 : x
  2. Step 2: Convert to fraction form
    20,709.11/31,069.71 = 6,668.82/x
  3. Step 3: Cross multiply
    20,709.11x = 31,069.71 × 6,668.82
  4. Step 4: Simplify right side
    20,709.11x = 207,198,303.44
  5. Step 5: Solve for x
    x = 207,198,303.44/20,709.11
  6. Step 6: Final answer
    x = 10,005.18

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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.