Home / 20,404.16-28,145.04-12,019.04

Finding the Fourth Proportional to 20,404.16, 28,145.04 and 12,019.04

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Solution

The fourth proportional to 20,404.16, 28,145.04 and 12,019.04 is: 16,578.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.16 : 28,145.04 = 12,019.04 : x
  2. Step 2: Convert to fraction form
    20,404.16/28,145.04 = 12,019.04/x
  3. Step 3: Cross multiply
    20,404.16x = 28,145.04 × 12,019.04
  4. Step 4: Simplify right side
    20,404.16x = 338,276,361.56
  5. Step 5: Solve for x
    x = 338,276,361.56/20,404.16
  6. Step 6: Final answer
    x = 16,578.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.