Home / 18,938.75-28,409.30-7,846.30

Finding the Fourth Proportional to 18,938.75, 28,409.30 and 7,846.30

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Solution

The fourth proportional to 18,938.75, 28,409.30 and 7,846.30 is: 11,769.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.75 : 28,409.30 = 7,846.30 : x
  2. Step 2: Convert to fraction form
    18,938.75/28,409.30 = 7,846.30/x
  3. Step 3: Cross multiply
    18,938.75x = 28,409.30 × 7,846.30
  4. Step 4: Simplify right side
    18,938.75x = 222,907,916.29
  5. Step 5: Solve for x
    x = 222,907,916.29/18,938.75
  6. Step 6: Final answer
    x = 11,769.94

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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.