Home / 12,431.16-18,646.68-3,666.15

Finding the Fourth Proportional to 12,431.16, 18,646.68 and 3,666.15

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Solution

The fourth proportional to 12,431.16, 18,646.68 and 3,666.15 is: 5,499.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.16 : 18,646.68 = 3,666.15 : x
  2. Step 2: Convert to fraction form
    12,431.16/18,646.68 = 3,666.15/x
  3. Step 3: Cross multiply
    12,431.16x = 18,646.68 × 3,666.15
  4. Step 4: Simplify right side
    12,431.16x = 68,361,525.88
  5. Step 5: Solve for x
    x = 68,361,525.88/12,431.16
  6. Step 6: Final answer
    x = 5,499.21

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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.