Home / 31,918.56-47,872.83-12,192.74

Finding the Fourth Proportional to 31,918.56, 47,872.83 and 12,192.74

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Solution

The fourth proportional to 31,918.56, 47,872.83 and 12,192.74 is: 18,287.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,918.56 : 47,872.83 = 12,192.74 : x
  2. Step 2: Convert to fraction form
    31,918.56/47,872.83 = 12,192.74/x
  3. Step 3: Cross multiply
    31,918.56x = 47,872.83 × 12,192.74
  4. Step 4: Simplify right side
    31,918.56x = 583,700,729.89
  5. Step 5: Solve for x
    x = 583,700,729.89/31,918.56
  6. Step 6: Final answer
    x = 18,287.19

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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.