Home / 18,930.96-28,396.32-5,783.28

Finding the Fourth Proportional to 18,930.96, 28,396.32 and 5,783.28

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Solution

The fourth proportional to 18,930.96, 28,396.32 and 5,783.28 is: 8,674.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.96 : 28,396.32 = 5,783.28 : x
  2. Step 2: Convert to fraction form
    18,930.96/28,396.32 = 5,783.28/x
  3. Step 3: Cross multiply
    18,930.96x = 28,396.32 × 5,783.28
  4. Step 4: Simplify right side
    18,930.96x = 164,223,869.53
  5. Step 5: Solve for x
    x = 164,223,869.53/18,930.96
  6. Step 6: Final answer
    x = 8,674.88

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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.