Home / 34,745.20-47,948.67-20,401.30

Finding the Fourth Proportional to 34,745.20, 47,948.67 and 20,401.30

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Solution

The fourth proportional to 34,745.20, 47,948.67 and 20,401.30 is: 28,153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,745.20 : 47,948.67 = 20,401.30 : x
  2. Step 2: Convert to fraction form
    34,745.20/47,948.67 = 20,401.30/x
  3. Step 3: Cross multiply
    34,745.20x = 47,948.67 × 20,401.30
  4. Step 4: Simplify right side
    34,745.20x = 978,215,201.27
  5. Step 5: Solve for x
    x = 978,215,201.27/34,745.20
  6. Step 6: Final answer
    x = 28,153.97

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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.