Home / 34,379.40-47,439.33-20,945.76

Finding the Fourth Proportional to 34,379.40, 47,439.33 and 20,945.76

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Solution

The fourth proportional to 34,379.40, 47,439.33 and 20,945.76 is: 28,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,379.40 : 47,439.33 = 20,945.76 : x
  2. Step 2: Convert to fraction form
    34,379.40/47,439.33 = 20,945.76/x
  3. Step 3: Cross multiply
    34,379.40x = 47,439.33 × 20,945.76
  4. Step 4: Simplify right side
    34,379.40x = 993,652,820.74
  5. Step 5: Solve for x
    x = 993,652,820.74/34,379.40
  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.