Home / 18,716.12-28,078.96-5,568.46

Finding the Fourth Proportional to 18,716.12, 28,078.96 and 5,568.46

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Solution

The fourth proportional to 18,716.12, 28,078.96 and 5,568.46 is: 8,354.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.12 : 28,078.96 = 5,568.46 : x
  2. Step 2: Convert to fraction form
    18,716.12/28,078.96 = 5,568.46/x
  3. Step 3: Cross multiply
    18,716.12x = 28,078.96 × 5,568.46
  4. Step 4: Simplify right side
    18,716.12x = 156,356,565.60
  5. Step 5: Solve for x
    x = 156,356,565.60/18,716.12
  6. Step 6: Final answer
    x = 8,354.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.