Home / 21,022.20-31,539.87-6,231.20

Finding the Fourth Proportional to 21,022.20, 31,539.87 and 6,231.20

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Solution

The fourth proportional to 21,022.20, 31,539.87 and 6,231.20 is: 9,348.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.20 : 31,539.87 = 6,231.20 : x
  2. Step 2: Convert to fraction form
    21,022.20/31,539.87 = 6,231.20/x
  3. Step 3: Cross multiply
    21,022.20x = 31,539.87 × 6,231.20
  4. Step 4: Simplify right side
    21,022.20x = 196,531,080.24
  5. Step 5: Solve for x
    x = 196,531,080.24/21,022.20
  6. Step 6: Final answer
    x = 9,348.74

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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.