Home / 31,982.20-47,973.30-20,260.60

Finding the Fourth Proportional to 31,982.20, 47,973.30 and 20,260.60

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Solution

The fourth proportional to 31,982.20, 47,973.30 and 20,260.60 is: 30,390.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,982.20 : 47,973.30 = 20,260.60 : x
  2. Step 2: Convert to fraction form
    31,982.20/47,973.30 = 20,260.60/x
  3. Step 3: Cross multiply
    31,982.20x = 47,973.30 × 20,260.60
  4. Step 4: Simplify right side
    31,982.20x = 971,967,841.98
  5. Step 5: Solve for x
    x = 971,967,841.98/31,982.20
  6. Step 6: Final answer
    x = 30,390.90

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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.