Home / 20,356.38-28,091.61-11,404.26

Finding the Fourth Proportional to 20,356.38, 28,091.61 and 11,404.26

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Solution

The fourth proportional to 20,356.38, 28,091.61 and 11,404.26 is: 15,737.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.38 : 28,091.61 = 11,404.26 : x
  2. Step 2: Convert to fraction form
    20,356.38/28,091.61 = 11,404.26/x
  3. Step 3: Cross multiply
    20,356.38x = 28,091.61 × 11,404.26
  4. Step 4: Simplify right side
    20,356.38x = 320,364,024.26
  5. Step 5: Solve for x
    x = 320,364,024.26/20,356.38
  6. Step 6: Final answer
    x = 15,737.77

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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.