Home / 34,743.70-47,946.60-20,399.80

Finding the Fourth Proportional to 34,743.70, 47,946.60 and 20,399.80

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Solution

The fourth proportional to 34,743.70, 47,946.60 and 20,399.80 is: 28,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,743.70 : 47,946.60 = 20,399.80 : x
  2. Step 2: Convert to fraction form
    34,743.70/47,946.60 = 20,399.80/x
  3. Step 3: Cross multiply
    34,743.70x = 47,946.60 × 20,399.80
  4. Step 4: Simplify right side
    34,743.70x = 978,101,050.68
  5. Step 5: Solve for x
    x = 978,101,050.68/34,743.70
  6. Step 6: Final answer
    x = 28,151.90

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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.