Home / 27,786.47-38,345.33-15,211.22

Finding the Fourth Proportional to 27,786.47, 38,345.33 and 15,211.22

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Solution

The fourth proportional to 27,786.47, 38,345.33 and 15,211.22 is: 20,991.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,786.47 : 38,345.33 = 15,211.22 : x
  2. Step 2: Convert to fraction form
    27,786.47/38,345.33 = 15,211.22/x
  3. Step 3: Cross multiply
    27,786.47x = 38,345.33 × 15,211.22
  4. Step 4: Simplify right side
    27,786.47x = 583,279,183.66
  5. Step 5: Solve for x
    x = 583,279,183.66/27,786.47
  6. Step 6: Final answer
    x = 20,991.48

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Double scale
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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.