Home / 20,450.40-28,224.54-11,498.64

Finding the Fourth Proportional to 20,450.40, 28,224.54 and 11,498.64

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Solution

The fourth proportional to 20,450.40, 28,224.54 and 11,498.64 is: 15,869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.40 : 28,224.54 = 11,498.64 : x
  2. Step 2: Convert to fraction form
    20,450.40/28,224.54 = 11,498.64/x
  3. Step 3: Cross multiply
    20,450.40x = 28,224.54 × 11,498.64
  4. Step 4: Simplify right side
    20,450.40x = 324,543,824.63
  5. Step 5: Solve for x
    x = 324,543,824.63/20,450.40
  6. Step 6: Final answer
    x = 15,869.80

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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.