Home / 34,745.69-47,949.35-20,401.80

Finding the Fourth Proportional to 34,745.69, 47,949.35 and 20,401.80

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Solution

The fourth proportional to 34,745.69, 47,949.35 and 20,401.80 is: 28,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,745.69 : 47,949.35 = 20,401.80 : x
  2. Step 2: Convert to fraction form
    34,745.69/47,949.35 = 20,401.80/x
  3. Step 3: Cross multiply
    34,745.69x = 47,949.35 × 20,401.80
  4. Step 4: Simplify right side
    34,745.69x = 978,252,946.82
  5. Step 5: Solve for x
    x = 978,252,946.82/34,745.69
  6. Step 6: Final answer
    x = 28,154.66

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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.