Home / 20,844.96-28,791.30-15,170.72

Finding the Fourth Proportional to 20,844.96, 28,791.30 and 15,170.72

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Solution

The fourth proportional to 20,844.96, 28,791.30 and 15,170.72 is: 20,953.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.96 : 28,791.30 = 15,170.72 : x
  2. Step 2: Convert to fraction form
    20,844.96/28,791.30 = 15,170.72/x
  3. Step 3: Cross multiply
    20,844.96x = 28,791.30 × 15,170.72
  4. Step 4: Simplify right side
    20,844.96x = 436,784,606.78
  5. Step 5: Solve for x
    x = 436,784,606.78/20,844.96
  6. Step 6: Final answer
    x = 20,953.97

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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.