Home / 31,918.68-47,861.01-12,185.91

Finding the Fourth Proportional to 31,918.68, 47,861.01 and 12,185.91

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Solution

The fourth proportional to 31,918.68, 47,861.01 and 12,185.91 is: 18,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,918.68 : 47,861.01 = 12,185.91 : x
  2. Step 2: Convert to fraction form
    31,918.68/47,861.01 = 12,185.91/x
  3. Step 3: Cross multiply
    31,918.68x = 47,861.01 × 12,185.91
  4. Step 4: Simplify right side
    31,918.68x = 583,229,960.37
  5. Step 5: Solve for x
    x = 583,229,960.37/31,918.68
  6. Step 6: Final answer
    x = 18,272.37

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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.