Home / 20,884.60-31,323.30-7,730.20

Finding the Fourth Proportional to 20,884.60, 31,323.30 and 7,730.20

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Solution

The fourth proportional to 20,884.60, 31,323.30 and 7,730.20 is: 11,593.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.60 : 31,323.30 = 7,730.20 : x
  2. Step 2: Convert to fraction form
    20,884.60/31,323.30 = 7,730.20/x
  3. Step 3: Cross multiply
    20,884.60x = 31,323.30 × 7,730.20
  4. Step 4: Simplify right side
    20,884.60x = 242,135,373.66
  5. Step 5: Solve for x
    x = 242,135,373.66/20,884.60
  6. Step 6: Final answer
    x = 11,593.97

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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.