Home / 31,678.42-47,476.44-12,936.46

Finding the Fourth Proportional to 31,678.42, 47,476.44 and 12,936.46

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Solution

The fourth proportional to 31,678.42, 47,476.44 and 12,936.46 is: 19,387.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.42 : 47,476.44 = 12,936.46 : x
  2. Step 2: Convert to fraction form
    31,678.42/47,476.44 = 12,936.46/x
  3. Step 3: Cross multiply
    31,678.42x = 47,476.44 × 12,936.46
  4. Step 4: Simplify right side
    31,678.42x = 614,177,067.00
  5. Step 5: Solve for x
    x = 614,177,067.00/31,678.42
  6. Step 6: Final answer
    x = 19,387.87

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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.