Home / 11,639.38-17,448.48-4,242.15

Finding the Fourth Proportional to 11,639.38, 17,448.48 and 4,242.15

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Solution

The fourth proportional to 11,639.38, 17,448.48 and 4,242.15 is: 6,359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.38 : 17,448.48 = 4,242.15 : x
  2. Step 2: Convert to fraction form
    11,639.38/17,448.48 = 4,242.15/x
  3. Step 3: Cross multiply
    11,639.38x = 17,448.48 × 4,242.15
  4. Step 4: Simplify right side
    11,639.38x = 74,019,069.43
  5. Step 5: Solve for x
    x = 74,019,069.43/11,639.38
  6. Step 6: Final answer
    x = 6,359.37

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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.