Home / 31,405.53-47,109.24-9,218.91

Finding the Fourth Proportional to 31,405.53, 47,109.24 and 9,218.91

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Solution

The fourth proportional to 31,405.53, 47,109.24 and 9,218.91 is: 13,828.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.53 : 47,109.24 = 9,218.91 : x
  2. Step 2: Convert to fraction form
    31,405.53/47,109.24 = 9,218.91/x
  3. Step 3: Cross multiply
    31,405.53x = 47,109.24 × 9,218.91
  4. Step 4: Simplify right side
    31,405.53x = 434,295,843.73
  5. Step 5: Solve for x
    x = 434,295,843.73/31,405.53
  6. Step 6: Final answer
    x = 13,828.64

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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.