Home / 20,827.38-28,741.78-11,395.94

Finding the Fourth Proportional to 20,827.38, 28,741.78 and 11,395.94

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Solution

The fourth proportional to 20,827.38, 28,741.78 and 11,395.94 is: 15,726.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.38 : 28,741.78 = 11,395.94 : x
  2. Step 2: Convert to fraction form
    20,827.38/28,741.78 = 11,395.94/x
  3. Step 3: Cross multiply
    20,827.38x = 28,741.78 × 11,395.94
  4. Step 4: Simplify right side
    20,827.38x = 327,539,500.03
  5. Step 5: Solve for x
    x = 327,539,500.03/20,827.38
  6. Step 6: Final answer
    x = 15,726.39

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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.