Home / 31,686.86-47,530.26-8,313.26

Finding the Fourth Proportional to 31,686.86, 47,530.26 and 8,313.26

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Solution

The fourth proportional to 31,686.86, 47,530.26 and 8,313.26 is: 12,469.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.86 : 47,530.26 = 8,313.26 : x
  2. Step 2: Convert to fraction form
    31,686.86/47,530.26 = 8,313.26/x
  3. Step 3: Cross multiply
    31,686.86x = 47,530.26 × 8,313.26
  4. Step 4: Simplify right side
    31,686.86x = 395,131,409.25
  5. Step 5: Solve for x
    x = 395,131,409.25/31,686.86
  6. Step 6: Final answer
    x = 12,469.88

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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.