Home / 20,834.88-28,752.74-11,404.05

Finding the Fourth Proportional to 20,834.88, 28,752.74 and 11,404.05

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Solution

The fourth proportional to 20,834.88, 28,752.74 and 11,404.05 is: 15,737.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.88 : 28,752.74 = 11,404.05 : x
  2. Step 2: Convert to fraction form
    20,834.88/28,752.74 = 11,404.05/x
  3. Step 3: Cross multiply
    20,834.88x = 28,752.74 × 11,404.05
  4. Step 4: Simplify right side
    20,834.88x = 327,897,684.60
  5. Step 5: Solve for x
    x = 327,897,684.60/20,834.88
  6. Step 6: Final answer
    x = 15,737.92

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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.