Home / 31,418.64-47,103.24-11,686.42

Finding the Fourth Proportional to 31,418.64, 47,103.24 and 11,686.42

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Solution

The fourth proportional to 31,418.64, 47,103.24 and 11,686.42 is: 17,520.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,418.64 : 47,103.24 = 11,686.42 : x
  2. Step 2: Convert to fraction form
    31,418.64/47,103.24 = 11,686.42/x
  3. Step 3: Cross multiply
    31,418.64x = 47,103.24 × 11,686.42
  4. Step 4: Simplify right side
    31,418.64x = 550,468,246.00
  5. Step 5: Solve for x
    x = 550,468,246.00/31,418.64
  6. Step 6: Final answer
    x = 17,520.44

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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.