Home / 10,121.64-15,183.72-5,435.20

Finding the Fourth Proportional to 10,121.64, 15,183.72 and 5,435.20

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Solution

The fourth proportional to 10,121.64, 15,183.72 and 5,435.20 is: 8,153.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.64 : 15,183.72 = 5,435.20 : x
  2. Step 2: Convert to fraction form
    10,121.64/15,183.72 = 5,435.20/x
  3. Step 3: Cross multiply
    10,121.64x = 15,183.72 × 5,435.20
  4. Step 4: Simplify right side
    10,121.64x = 82,526,554.94
  5. Step 5: Solve for x
    x = 82,526,554.94/10,121.64
  6. Step 6: Final answer
    x = 8,153.48

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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.