Home / 20,449.20-28,220.01-11,496.63

Finding the Fourth Proportional to 20,449.20, 28,220.01 and 11,496.63

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Solution

The fourth proportional to 20,449.20, 28,220.01 and 11,496.63 is: 15,865.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.20 : 28,220.01 = 11,496.63 : x
  2. Step 2: Convert to fraction form
    20,449.20/28,220.01 = 11,496.63/x
  3. Step 3: Cross multiply
    20,449.20x = 28,220.01 × 11,496.63
  4. Step 4: Simplify right side
    20,449.20x = 324,435,013.57
  5. Step 5: Solve for x
    x = 324,435,013.57/20,449.20
  6. Step 6: Final answer
    x = 15,865.41

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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.