Home / 20,835.68-28,753.16-11,404.22

Finding the Fourth Proportional to 20,835.68, 28,753.16 and 11,404.22

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Solution

The fourth proportional to 20,835.68, 28,753.16 and 11,404.22 is: 15,737.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.68 : 28,753.16 = 11,404.22 : x
  2. Step 2: Convert to fraction form
    20,835.68/28,753.16 = 11,404.22/x
  3. Step 3: Cross multiply
    20,835.68x = 28,753.16 × 11,404.22
  4. Step 4: Simplify right side
    20,835.68x = 327,907,161.55
  5. Step 5: Solve for x
    x = 327,907,161.55/20,835.68
  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.