Home / 21,014.82-31,511.43-6,221.88

Finding the Fourth Proportional to 21,014.82, 31,511.43 and 6,221.88

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Solution

The fourth proportional to 21,014.82, 31,511.43 and 6,221.88 is: 9,329.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.82 : 31,511.43 = 6,221.88 : x
  2. Step 2: Convert to fraction form
    21,014.82/31,511.43 = 6,221.88/x
  3. Step 3: Cross multiply
    21,014.82x = 31,511.43 × 6,221.88
  4. Step 4: Simplify right side
    21,014.82x = 196,060,336.09
  5. Step 5: Solve for x
    x = 196,060,336.09/21,014.82
  6. Step 6: Final answer
    x = 9,329.62

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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.