Home / 12,431.87-18,650.77-3,666.79

Finding the Fourth Proportional to 12,431.87, 18,650.77 and 3,666.79

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Solution

The fourth proportional to 12,431.87, 18,650.77 and 3,666.79 is: 5,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.87 : 18,650.77 = 3,666.79 : x
  2. Step 2: Convert to fraction form
    12,431.87/18,650.77 = 3,666.79/x
  3. Step 3: Cross multiply
    12,431.87x = 18,650.77 × 3,666.79
  4. Step 4: Simplify right side
    12,431.87x = 68,388,401.13
  5. Step 5: Solve for x
    x = 68,388,401.13/12,431.87
  6. Step 6: Final answer
    x = 5,501.05

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1.5x scale

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.