Home / 21,011.82-31,517.64-6,220.83

Finding the Fourth Proportional to 21,011.82, 31,517.64 and 6,220.83

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Solution

The fourth proportional to 21,011.82, 31,517.64 and 6,220.83 is: 9,331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.82 : 31,517.64 = 6,220.83 : x
  2. Step 2: Convert to fraction form
    21,011.82/31,517.64 = 6,220.83/x
  3. Step 3: Cross multiply
    21,011.82x = 31,517.64 × 6,220.83
  4. Step 4: Simplify right side
    21,011.82x = 196,065,880.44
  5. Step 5: Solve for x
    x = 196,065,880.44/21,011.82
  6. Step 6: Final answer
    x = 9,331.22

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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.