Home / 31,846.20-47,769.30-20,172.60

Finding the Fourth Proportional to 31,846.20, 47,769.30 and 20,172.60

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Solution

The fourth proportional to 31,846.20, 47,769.30 and 20,172.60 is: 30,258.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,846.20 : 47,769.30 = 20,172.60 : x
  2. Step 2: Convert to fraction form
    31,846.20/47,769.30 = 20,172.60/x
  3. Step 3: Cross multiply
    31,846.20x = 47,769.30 × 20,172.60
  4. Step 4: Simplify right side
    31,846.20x = 963,630,981.18
  5. Step 5: Solve for x
    x = 963,630,981.18/31,846.20
  6. Step 6: Final answer
    x = 30,258.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.