Home / 31,887.92-47,837.31-13,157.70

Finding the Fourth Proportional to 31,887.92, 47,837.31 and 13,157.70

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Solution

The fourth proportional to 31,887.92, 47,837.31 and 13,157.70 is: 19,738.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,887.92 : 47,837.31 = 13,157.70 : x
  2. Step 2: Convert to fraction form
    31,887.92/47,837.31 = 13,157.70/x
  3. Step 3: Cross multiply
    31,887.92x = 47,837.31 × 13,157.70
  4. Step 4: Simplify right side
    31,887.92x = 629,428,973.79
  5. Step 5: Solve for x
    x = 629,428,973.79/31,887.92
  6. Step 6: Final answer
    x = 19,738.79

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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.