Home / 20,684.22-28,544.45-11,252.81

Finding the Fourth Proportional to 20,684.22, 28,544.45 and 11,252.81

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Solution

The fourth proportional to 20,684.22, 28,544.45 and 11,252.81 is: 15,528.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.22 : 28,544.45 = 11,252.81 : x
  2. Step 2: Convert to fraction form
    20,684.22/28,544.45 = 11,252.81/x
  3. Step 3: Cross multiply
    20,684.22x = 28,544.45 × 11,252.81
  4. Step 4: Simplify right side
    20,684.22x = 321,205,073.42
  5. Step 5: Solve for x
    x = 321,205,073.42/20,684.22
  6. Step 6: Final answer
    x = 15,528.99

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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.