Home / 20,684.40-28,544.16-11,252.88

Finding the Fourth Proportional to 20,684.40, 28,544.16 and 11,252.88

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Solution

The fourth proportional to 20,684.40, 28,544.16 and 11,252.88 is: 15,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.40 : 28,544.16 = 11,252.88 : x
  2. Step 2: Convert to fraction form
    20,684.40/28,544.16 = 11,252.88/x
  3. Step 3: Cross multiply
    20,684.40x = 28,544.16 × 11,252.88
  4. Step 4: Simplify right side
    20,684.40x = 321,204,007.18
  5. Step 5: Solve for x
    x = 321,204,007.18/20,684.40
  6. Step 6: Final answer
    x = 15,528.80

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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.