Home / 20,400.62-28,153.35-11,448.83

Finding the Fourth Proportional to 20,400.62, 28,153.35 and 11,448.83

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Solution

The fourth proportional to 20,400.62, 28,153.35 and 11,448.83 is: 15,799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.62 : 28,153.35 = 11,448.83 : x
  2. Step 2: Convert to fraction form
    20,400.62/28,153.35 = 11,448.83/x
  3. Step 3: Cross multiply
    20,400.62x = 28,153.35 × 11,448.83
  4. Step 4: Simplify right side
    20,400.62x = 322,322,777.31
  5. Step 5: Solve for x
    x = 322,322,777.31/20,400.62
  6. Step 6: Final answer
    x = 15,799.66

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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.