Home / 12,421.55-18,634.62-4,102.14

Finding the Fourth Proportional to 12,421.55, 18,634.62 and 4,102.14

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Solution

The fourth proportional to 12,421.55, 18,634.62 and 4,102.14 is: 6,153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.55 : 18,634.62 = 4,102.14 : x
  2. Step 2: Convert to fraction form
    12,421.55/18,634.62 = 4,102.14/x
  3. Step 3: Cross multiply
    12,421.55x = 18,634.62 × 4,102.14
  4. Step 4: Simplify right side
    12,421.55x = 76,441,820.09
  5. Step 5: Solve for x
    x = 76,441,820.09/12,421.55
  6. Step 6: Final answer
    x = 6,153.97

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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.