Home / 31,791.56-47,687.32-13,081.78

Finding the Fourth Proportional to 31,791.56, 47,687.32 and 13,081.78

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Solution

The fourth proportional to 31,791.56, 47,687.32 and 13,081.78 is: 19,622.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,791.56 : 47,687.32 = 13,081.78 : x
  2. Step 2: Convert to fraction form
    31,791.56/47,687.32 = 13,081.78/x
  3. Step 3: Cross multiply
    31,791.56x = 47,687.32 × 13,081.78
  4. Step 4: Simplify right side
    31,791.56x = 623,835,029.03
  5. Step 5: Solve for x
    x = 623,835,029.03/31,791.56
  6. Step 6: Final answer
    x = 19,622.66

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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.