Home / 38,286.32-57,429.48-11,993.12

Finding the Fourth Proportional to 38,286.32, 57,429.48 and 11,993.12

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Solution

The fourth proportional to 38,286.32, 57,429.48 and 11,993.12 is: 17,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,286.32 : 57,429.48 = 11,993.12 : x
  2. Step 2: Convert to fraction form
    38,286.32/57,429.48 = 11,993.12/x
  3. Step 3: Cross multiply
    38,286.32x = 57,429.48 × 11,993.12
  4. Step 4: Simplify right side
    38,286.32x = 688,758,645.18
  5. Step 5: Solve for x
    x = 688,758,645.18/38,286.32
  6. Step 6: Final answer
    x = 17,989.68

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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.