Home / 18,716.10-28,074.15-8,874.60

Finding the Fourth Proportional to 18,716.10, 28,074.15 and 8,874.60

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Solution

The fourth proportional to 18,716.10, 28,074.15 and 8,874.60 is: 13,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.10 : 28,074.15 = 8,874.60 : x
  2. Step 2: Convert to fraction form
    18,716.10/28,074.15 = 8,874.60/x
  3. Step 3: Cross multiply
    18,716.10x = 28,074.15 × 8,874.60
  4. Step 4: Simplify right side
    18,716.10x = 249,146,851.59
  5. Step 5: Solve for x
    x = 249,146,851.59/18,716.10
  6. Step 6: Final answer
    x = 13,311.90

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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.