Home / 19,917.96-27,489.29-11,421.47

Finding the Fourth Proportional to 19,917.96, 27,489.29 and 11,421.47

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Solution

The fourth proportional to 19,917.96, 27,489.29 and 11,421.47 is: 15,763.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.96 : 27,489.29 = 11,421.47 : x
  2. Step 2: Convert to fraction form
    19,917.96/27,489.29 = 11,421.47/x
  3. Step 3: Cross multiply
    19,917.96x = 27,489.29 × 11,421.47
  4. Step 4: Simplify right side
    19,917.96x = 313,967,906.50
  5. Step 5: Solve for x
    x = 313,967,906.50/19,917.96
  6. Step 6: Final answer
    x = 15,763.06

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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.