Home / 12,647.17-18,975.68-5,249.75

Finding the Fourth Proportional to 12,647.17, 18,975.68 and 5,249.75

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Solution

The fourth proportional to 12,647.17, 18,975.68 and 5,249.75 is: 7,876.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.17 : 18,975.68 = 5,249.75 : x
  2. Step 2: Convert to fraction form
    12,647.17/18,975.68 = 5,249.75/x
  3. Step 3: Cross multiply
    12,647.17x = 18,975.68 × 5,249.75
  4. Step 4: Simplify right side
    12,647.17x = 99,617,549.83
  5. Step 5: Solve for x
    x = 99,617,549.83/12,647.17
  6. Step 6: Final answer
    x = 7,876.67

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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.