Home / 21,049.43-29,047.63-11,489.61

Finding the Fourth Proportional to 21,049.43, 29,047.63 and 11,489.61

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Solution

The fourth proportional to 21,049.43, 29,047.63 and 11,489.61 is: 15,855.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.43 : 29,047.63 = 11,489.61 : x
  2. Step 2: Convert to fraction form
    21,049.43/29,047.63 = 11,489.61/x
  3. Step 3: Cross multiply
    21,049.43x = 29,047.63 × 11,489.61
  4. Step 4: Simplify right side
    21,049.43x = 333,745,882.68
  5. Step 5: Solve for x
    x = 333,745,882.68/21,049.43
  6. Step 6: Final answer
    x = 15,855.34

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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.