Home / 21,012.82-31,519.14-6,221.80

Finding the Fourth Proportional to 21,012.82, 31,519.14 and 6,221.80

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Solution

The fourth proportional to 21,012.82, 31,519.14 and 6,221.80 is: 9,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.82 : 31,519.14 = 6,221.80 : x
  2. Step 2: Convert to fraction form
    21,012.82/31,519.14 = 6,221.80/x
  3. Step 3: Cross multiply
    21,012.82x = 31,519.14 × 6,221.80
  4. Step 4: Simplify right side
    21,012.82x = 196,105,785.25
  5. Step 5: Solve for x
    x = 196,105,785.25/21,012.82
  6. Step 6: Final answer
    x = 9,332.67

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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.