Home / 19,287.26-28,916.31-15,389.54

Finding the Fourth Proportional to 19,287.26, 28,916.31 and 15,389.54

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Solution

The fourth proportional to 19,287.26, 28,916.31 and 15,389.54 is: 23,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.26 : 28,916.31 = 15,389.54 : x
  2. Step 2: Convert to fraction form
    19,287.26/28,916.31 = 15,389.54/x
  3. Step 3: Cross multiply
    19,287.26x = 28,916.31 × 15,389.54
  4. Step 4: Simplify right side
    19,287.26x = 445,008,709.40
  5. Step 5: Solve for x
    x = 445,008,709.40/19,287.26
  6. Step 6: Final answer
    x = 23,072.68

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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.