Home / 11,431.01-17,145.28-3,639.21

Finding the Fourth Proportional to 11,431.01, 17,145.28 and 3,639.21

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Solution

The fourth proportional to 11,431.01, 17,145.28 and 3,639.21 is: 5,458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.01 : 17,145.28 = 3,639.21 : x
  2. Step 2: Convert to fraction form
    11,431.01/17,145.28 = 3,639.21/x
  3. Step 3: Cross multiply
    11,431.01x = 17,145.28 × 3,639.21
  4. Step 4: Simplify right side
    11,431.01x = 62,395,274.43
  5. Step 5: Solve for x
    x = 62,395,274.43/11,431.01
  6. Step 6: Final answer
    x = 5,458.42

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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.