Home / 31,905.50-47,861.42-12,200.63

Finding the Fourth Proportional to 31,905.50, 47,861.42 and 12,200.63

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Solution

The fourth proportional to 31,905.50, 47,861.42 and 12,200.63 is: 18,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,905.50 : 47,861.42 = 12,200.63 : x
  2. Step 2: Convert to fraction form
    31,905.50/47,861.42 = 12,200.63/x
  3. Step 3: Cross multiply
    31,905.50x = 47,861.42 × 12,200.63
  4. Step 4: Simplify right side
    31,905.50x = 583,939,176.38
  5. Step 5: Solve for x
    x = 583,939,176.38/31,905.50
  6. Step 6: Final answer
    x = 18,302.15

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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.