Home / 31,912.18-47,871.54-12,207.31

Finding the Fourth Proportional to 31,912.18, 47,871.54 and 12,207.31

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Solution

The fourth proportional to 31,912.18, 47,871.54 and 12,207.31 is: 18,312.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,912.18 : 47,871.54 = 12,207.31 : x
  2. Step 2: Convert to fraction form
    31,912.18/47,871.54 = 12,207.31/x
  3. Step 3: Cross multiply
    31,912.18x = 47,871.54 × 12,207.31
  4. Step 4: Simplify right side
    31,912.18x = 584,382,609.28
  5. Step 5: Solve for x
    x = 584,382,609.28/31,912.18
  6. Step 6: Final answer
    x = 18,312.21

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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.