Home / 34,379.38-47,439.30-20,945.76

Finding the Fourth Proportional to 34,379.38, 47,439.30 and 20,945.76

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Solution

The fourth proportional to 34,379.38, 47,439.30 and 20,945.76 is: 28,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,379.38 : 47,439.30 = 20,945.76 : x
  2. Step 2: Convert to fraction form
    34,379.38/47,439.30 = 20,945.76/x
  3. Step 3: Cross multiply
    34,379.38x = 47,439.30 × 20,945.76
  4. Step 4: Simplify right side
    34,379.38x = 993,652,192.37
  5. Step 5: Solve for x
    x = 993,652,192.37/34,379.38
  6. Step 6: Final answer
    x = 28,902.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.