Home / 28,107.42-38,792.16-16,170.72

Finding the Fourth Proportional to 28,107.42, 38,792.16 and 16,170.72

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Solution

The fourth proportional to 28,107.42, 38,792.16 and 16,170.72 is: 22,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.42 : 38,792.16 = 16,170.72 : x
  2. Step 2: Convert to fraction form
    28,107.42/38,792.16 = 16,170.72/x
  3. Step 3: Cross multiply
    28,107.42x = 38,792.16 × 16,170.72
  4. Step 4: Simplify right side
    28,107.42x = 627,297,157.56
  5. Step 5: Solve for x
    x = 627,297,157.56/28,107.42
  6. Step 6: Final answer
    x = 22,317.85

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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.