Home / 20,753.74-28,640.03-11,801.24

Finding the Fourth Proportional to 20,753.74, 28,640.03 and 11,801.24

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Solution

The fourth proportional to 20,753.74, 28,640.03 and 11,801.24 is: 16,285.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.74 : 28,640.03 = 11,801.24 : x
  2. Step 2: Convert to fraction form
    20,753.74/28,640.03 = 11,801.24/x
  3. Step 3: Cross multiply
    20,753.74x = 28,640.03 × 11,801.24
  4. Step 4: Simplify right side
    20,753.74x = 337,987,909.73
  5. Step 5: Solve for x
    x = 337,987,909.73/20,753.74
  6. Step 6: Final answer
    x = 16,285.64

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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.