Home / 20,568.12-28,383.88-11,618.52

Finding the Fourth Proportional to 20,568.12, 28,383.88 and 11,618.52

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Solution

The fourth proportional to 20,568.12, 28,383.88 and 11,618.52 is: 16,033.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.12 : 28,383.88 = 11,618.52 : x
  2. Step 2: Convert to fraction form
    20,568.12/28,383.88 = 11,618.52/x
  3. Step 3: Cross multiply
    20,568.12x = 28,383.88 × 11,618.52
  4. Step 4: Simplify right side
    20,568.12x = 329,778,677.46
  5. Step 5: Solve for x
    x = 329,778,677.46/20,568.12
  6. Step 6: Final answer
    x = 16,033.49

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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.