Home / 31,887.81-47,849.34-13,163.47

Finding the Fourth Proportional to 31,887.81, 47,849.34 and 13,163.47

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Solution

The fourth proportional to 31,887.81, 47,849.34 and 13,163.47 is: 19,752.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,887.81 : 47,849.34 = 13,163.47 : x
  2. Step 2: Convert to fraction form
    31,887.81/47,849.34 = 13,163.47/x
  3. Step 3: Cross multiply
    31,887.81x = 47,849.34 × 13,163.47
  4. Step 4: Simplify right side
    31,887.81x = 629,863,351.61
  5. Step 5: Solve for x
    x = 629,863,351.61/31,887.81
  6. Step 6: Final answer
    x = 19,752.48

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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.