Home / 34,745.70-47,949.17-20,402.76

Finding the Fourth Proportional to 34,745.70, 47,949.17 and 20,402.76

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Solution

The fourth proportional to 34,745.70, 47,949.17 and 20,402.76 is: 28,155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,745.70 : 47,949.17 = 20,402.76 : x
  2. Step 2: Convert to fraction form
    34,745.70/47,949.17 = 20,402.76/x
  3. Step 3: Cross multiply
    34,745.70x = 47,949.17 × 20,402.76
  4. Step 4: Simplify right side
    34,745.70x = 978,295,305.70
  5. Step 5: Solve for x
    x = 978,295,305.70/34,745.70
  6. Step 6: Final answer
    x = 28,155.87

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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.