Home / 12,486.12-18,716.04-4,986.72

Finding the Fourth Proportional to 12,486.12, 18,716.04 and 4,986.72

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Solution

The fourth proportional to 12,486.12, 18,716.04 and 4,986.72 is: 7,474.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.12 : 18,716.04 = 4,986.72 : x
  2. Step 2: Convert to fraction form
    12,486.12/18,716.04 = 4,986.72/x
  3. Step 3: Cross multiply
    12,486.12x = 18,716.04 × 4,986.72
  4. Step 4: Simplify right side
    12,486.12x = 93,331,650.99
  5. Step 5: Solve for x
    x = 93,331,650.99/12,486.12
  6. Step 6: Final answer
    x = 7,474.83

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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.