Home / 21,022.92-31,517.28-7,867.92

Finding the Fourth Proportional to 21,022.92, 31,517.28 and 7,867.92

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Solution

The fourth proportional to 21,022.92, 31,517.28 and 7,867.92 is: 11,795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.92 : 31,517.28 = 7,867.92 : x
  2. Step 2: Convert to fraction form
    21,022.92/31,517.28 = 7,867.92/x
  3. Step 3: Cross multiply
    21,022.92x = 31,517.28 × 7,867.92
  4. Step 4: Simplify right side
    21,022.92x = 247,975,437.66
  5. Step 5: Solve for x
    x = 247,975,437.66/21,022.92
  6. Step 6: Final answer
    x = 11,795.48

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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.