Home / 31,986.11-47,954.39-21,439.23

Finding the Fourth Proportional to 31,986.11, 47,954.39 and 21,439.23

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Solution

The fourth proportional to 31,986.11, 47,954.39 and 21,439.23 is: 32,142.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.11 : 47,954.39 = 21,439.23 : x
  2. Step 2: Convert to fraction form
    31,986.11/47,954.39 = 21,439.23/x
  3. Step 3: Cross multiply
    31,986.11x = 47,954.39 × 21,439.23
  4. Step 4: Simplify right side
    31,986.11x = 1,028,105,089.52
  5. Step 5: Solve for x
    x = 1,028,105,089.52/31,986.11
  6. Step 6: Final answer
    x = 32,142.24

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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.