Home / 20,440.62-28,209.06-12,481.56

Finding the Fourth Proportional to 20,440.62, 28,209.06 and 12,481.56

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Solution

The fourth proportional to 20,440.62, 28,209.06 and 12,481.56 is: 17,225.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.62 : 28,209.06 = 12,481.56 : x
  2. Step 2: Convert to fraction form
    20,440.62/28,209.06 = 12,481.56/x
  3. Step 3: Cross multiply
    20,440.62x = 28,209.06 × 12,481.56
  4. Step 4: Simplify right side
    20,440.62x = 352,093,074.93
  5. Step 5: Solve for x
    x = 352,093,074.93/20,440.62
  6. Step 6: Final answer
    x = 17,225.17

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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.