Home / 19,721.83-27,218.09-11,764.05

Finding the Fourth Proportional to 19,721.83, 27,218.09 and 11,764.05

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Solution

The fourth proportional to 19,721.83, 27,218.09 and 11,764.05 is: 16,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.83 : 27,218.09 = 11,764.05 : x
  2. Step 2: Convert to fraction form
    19,721.83/27,218.09 = 11,764.05/x
  3. Step 3: Cross multiply
    19,721.83x = 27,218.09 × 11,764.05
  4. Step 4: Simplify right side
    19,721.83x = 320,195,044.75
  5. Step 5: Solve for x
    x = 320,195,044.75/19,721.83
  6. Step 6: Final answer
    x = 16,235.57

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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.