Home / 31,313.91-46,986.03-13,781.46

Finding the Fourth Proportional to 31,313.91, 46,986.03 and 13,781.46

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Solution

The fourth proportional to 31,313.91, 46,986.03 and 13,781.46 is: 20,678.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,313.91 : 46,986.03 = 13,781.46 : x
  2. Step 2: Convert to fraction form
    31,313.91/46,986.03 = 13,781.46/x
  3. Step 3: Cross multiply
    31,313.91x = 46,986.03 × 13,781.46
  4. Step 4: Simplify right side
    31,313.91x = 647,536,093.00
  5. Step 5: Solve for x
    x = 647,536,093.00/31,313.91
  6. Step 6: Final answer
    x = 20,678.86

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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.