Home / 27,380.14-37,785.64-15,442.78

Finding the Fourth Proportional to 27,380.14, 37,785.64 and 15,442.78

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Solution

The fourth proportional to 27,380.14, 37,785.64 and 15,442.78 is: 21,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,380.14 : 37,785.64 = 15,442.78 : x
  2. Step 2: Convert to fraction form
    27,380.14/37,785.64 = 15,442.78/x
  3. Step 3: Cross multiply
    27,380.14x = 37,785.64 × 15,442.78
  4. Step 4: Simplify right side
    27,380.14x = 583,515,325.68
  5. Step 5: Solve for x
    x = 583,515,325.68/27,380.14
  6. Step 6: Final answer
    x = 21,311.63

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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.