Home / 31,687.80-47,529.23-8,313.63

Finding the Fourth Proportional to 31,687.80, 47,529.23 and 8,313.63

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Solution

The fourth proportional to 31,687.80, 47,529.23 and 8,313.63 is: 12,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.80 : 47,529.23 = 8,313.63 : x
  2. Step 2: Convert to fraction form
    31,687.80/47,529.23 = 8,313.63/x
  3. Step 3: Cross multiply
    31,687.80x = 47,529.23 × 8,313.63
  4. Step 4: Simplify right side
    31,687.80x = 395,140,390.84
  5. Step 5: Solve for x
    x = 395,140,390.84/31,687.80
  6. Step 6: Final answer
    x = 12,469.80

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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.