Home / 12,186.12-18,276.75-3,421.12

Finding the Fourth Proportional to 12,186.12, 18,276.75 and 3,421.12

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Solution

The fourth proportional to 12,186.12, 18,276.75 and 3,421.12 is: 5,131.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.12 : 18,276.75 = 3,421.12 : x
  2. Step 2: Convert to fraction form
    12,186.12/18,276.75 = 3,421.12/x
  3. Step 3: Cross multiply
    12,186.12x = 18,276.75 × 3,421.12
  4. Step 4: Simplify right side
    12,186.12x = 62,526,954.96
  5. Step 5: Solve for x
    x = 62,526,954.96/12,186.12
  6. Step 6: Final answer
    x = 5,131.00

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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.