Home / 18,730.21-28,099.42-7,043.43

Finding the Fourth Proportional to 18,730.21, 28,099.42 and 7,043.43

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Solution

The fourth proportional to 18,730.21, 28,099.42 and 7,043.43 is: 10,566.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.21 : 28,099.42 = 7,043.43 : x
  2. Step 2: Convert to fraction form
    18,730.21/28,099.42 = 7,043.43/x
  3. Step 3: Cross multiply
    18,730.21x = 28,099.42 × 7,043.43
  4. Step 4: Simplify right side
    18,730.21x = 197,916,297.81
  5. Step 5: Solve for x
    x = 197,916,297.81/18,730.21
  6. Step 6: Final answer
    x = 10,566.69

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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.