Home / 31,778.13-47,652.39-11,786.82

Finding the Fourth Proportional to 31,778.13, 47,652.39 and 11,786.82

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Solution

The fourth proportional to 31,778.13, 47,652.39 and 11,786.82 is: 17,674.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,778.13 : 47,652.39 = 11,786.82 : x
  2. Step 2: Convert to fraction form
    31,778.13/47,652.39 = 11,786.82/x
  3. Step 3: Cross multiply
    31,778.13x = 47,652.39 × 11,786.82
  4. Step 4: Simplify right side
    31,778.13x = 561,670,143.50
  5. Step 5: Solve for x
    x = 561,670,143.50/31,778.13
  6. Step 6: Final answer
    x = 17,674.74

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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.