Home / 31,449.30-47,195.79-20,328.36

Finding the Fourth Proportional to 31,449.30, 47,195.79 and 20,328.36

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Solution

The fourth proportional to 31,449.30, 47,195.79 and 20,328.36 is: 30,506.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,449.30 : 47,195.79 = 20,328.36 : x
  2. Step 2: Convert to fraction form
    31,449.30/47,195.79 = 20,328.36/x
  3. Step 3: Cross multiply
    31,449.30x = 47,195.79 × 20,328.36
  4. Step 4: Simplify right side
    31,449.30x = 959,413,009.60
  5. Step 5: Solve for x
    x = 959,413,009.60/31,449.30
  6. Step 6: Final answer
    x = 30,506.66

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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.