Home / 27,991.22-38,627.90-15,415.97

Finding the Fourth Proportional to 27,991.22, 38,627.90 and 15,415.97

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Solution

The fourth proportional to 27,991.22, 38,627.90 and 15,415.97 is: 21,274.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,991.22 : 38,627.90 = 15,415.97 : x
  2. Step 2: Convert to fraction form
    27,991.22/38,627.90 = 15,415.97/x
  3. Step 3: Cross multiply
    27,991.22x = 38,627.90 × 15,415.97
  4. Step 4: Simplify right side
    27,991.22x = 595,486,277.34
  5. Step 5: Solve for x
    x = 595,486,277.34/27,991.22
  6. Step 6: Final answer
    x = 21,274.04

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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.