Home / 20,827.72-28,741.86-11,396.44

Finding the Fourth Proportional to 20,827.72, 28,741.86 and 11,396.44

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Solution

The fourth proportional to 20,827.72, 28,741.86 and 11,396.44 is: 15,726.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.72 : 28,741.86 = 11,396.44 : x
  2. Step 2: Convert to fraction form
    20,827.72/28,741.86 = 11,396.44/x
  3. Step 3: Cross multiply
    20,827.72x = 28,741.86 × 11,396.44
  4. Step 4: Simplify right side
    20,827.72x = 327,554,882.98
  5. Step 5: Solve for x
    x = 327,554,882.98/20,827.72
  6. Step 6: Final answer
    x = 15,726.87

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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.