Home / 20,844.46-28,790.60-15,170.21

Finding the Fourth Proportional to 20,844.46, 28,790.60 and 15,170.21

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Solution

The fourth proportional to 20,844.46, 28,790.60 and 15,170.21 is: 20,953.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.46 : 28,790.60 = 15,170.21 : x
  2. Step 2: Convert to fraction form
    20,844.46/28,790.60 = 15,170.21/x
  3. Step 3: Cross multiply
    20,844.46x = 28,790.60 × 15,170.21
  4. Step 4: Simplify right side
    20,844.46x = 436,759,448.03
  5. Step 5: Solve for x
    x = 436,759,448.03/20,844.46
  6. Step 6: Final answer
    x = 20,953.26

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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.