Home / 13,019.91-19,553.70-11,921.97

Finding the Fourth Proportional to 13,019.91, 19,553.70 and 11,921.97

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Solution

The fourth proportional to 13,019.91, 19,553.70 and 11,921.97 is: 17,904.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.91 : 19,553.70 = 11,921.97 : x
  2. Step 2: Convert to fraction form
    13,019.91/19,553.70 = 11,921.97/x
  3. Step 3: Cross multiply
    13,019.91x = 19,553.70 × 11,921.97
  4. Step 4: Simplify right side
    13,019.91x = 233,118,624.79
  5. Step 5: Solve for x
    x = 233,118,624.79/13,019.91
  6. Step 6: Final answer
    x = 17,904.78

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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.