Home / 31,429.97-47,174.58-11,458.78

Finding the Fourth Proportional to 31,429.97, 47,174.58 and 11,458.78

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Solution

The fourth proportional to 31,429.97, 47,174.58 and 11,458.78 is: 17,198.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,429.97 : 47,174.58 = 11,458.78 : x
  2. Step 2: Convert to fraction form
    31,429.97/47,174.58 = 11,458.78/x
  3. Step 3: Cross multiply
    31,429.97x = 47,174.58 × 11,458.78
  4. Step 4: Simplify right side
    31,429.97x = 540,563,015.88
  5. Step 5: Solve for x
    x = 540,563,015.88/31,429.97
  6. Step 6: Final answer
    x = 17,198.97

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1.5x scale

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.