Home / 19,721.90-27,212.94-11,761.22

Finding the Fourth Proportional to 19,721.90, 27,212.94 and 11,761.22

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Solution

The fourth proportional to 19,721.90, 27,212.94 and 11,761.22 is: 16,228.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.90 : 27,212.94 = 11,761.22 : x
  2. Step 2: Convert to fraction form
    19,721.90/27,212.94 = 11,761.22/x
  3. Step 3: Cross multiply
    19,721.90x = 27,212.94 × 11,761.22
  4. Step 4: Simplify right side
    19,721.90x = 320,057,238.12
  5. Step 5: Solve for x
    x = 320,057,238.12/19,721.90
  6. Step 6: Final answer
    x = 16,228.52

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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.