Home / 12,404.21-18,609.12-4,085.06

Finding the Fourth Proportional to 12,404.21, 18,609.12 and 4,085.06

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Solution

The fourth proportional to 12,404.21, 18,609.12 and 4,085.06 is: 6,128.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.21 : 18,609.12 = 4,085.06 : x
  2. Step 2: Convert to fraction form
    12,404.21/18,609.12 = 4,085.06/x
  3. Step 3: Cross multiply
    12,404.21x = 18,609.12 × 4,085.06
  4. Step 4: Simplify right side
    12,404.21x = 76,019,278.70
  5. Step 5: Solve for x
    x = 76,019,278.70/12,404.21
  6. Step 6: Final answer
    x = 6,128.51

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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.