Home / 15,952.30-21,991.36-11,221.90

Finding the Fourth Proportional to 15,952.30, 21,991.36 and 11,221.90

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Solution

The fourth proportional to 15,952.30, 21,991.36 and 11,221.90 is: 15,470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,952.30 : 21,991.36 = 11,221.90 : x
  2. Step 2: Convert to fraction form
    15,952.30/21,991.36 = 11,221.90/x
  3. Step 3: Cross multiply
    15,952.30x = 21,991.36 × 11,221.90
  4. Step 4: Simplify right side
    15,952.30x = 246,784,842.78
  5. Step 5: Solve for x
    x = 246,784,842.78/15,952.30
  6. Step 6: Final answer
    x = 15,470.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.