Home / 27,381.21-37,785.39-15,443.61

Finding the Fourth Proportional to 27,381.21, 37,785.39 and 15,443.61

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Solution

The fourth proportional to 27,381.21, 37,785.39 and 15,443.61 is: 21,311.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,381.21 : 37,785.39 = 15,443.61 : x
  2. Step 2: Convert to fraction form
    27,381.21/37,785.39 = 15,443.61/x
  3. Step 3: Cross multiply
    27,381.21x = 37,785.39 × 15,443.61
  4. Step 4: Simplify right side
    27,381.21x = 583,542,826.86
  5. Step 5: Solve for x
    x = 583,542,826.86/27,381.21
  6. Step 6: Final answer
    x = 21,311.80

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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.