Home / 39,576.90-54,616.38-21,672.06

Finding the Fourth Proportional to 39,576.90, 54,616.38 and 21,672.06

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Solution

The fourth proportional to 39,576.90, 54,616.38 and 21,672.06 is: 29,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,576.90 : 54,616.38 = 21,672.06 : x
  2. Step 2: Convert to fraction form
    39,576.90/54,616.38 = 21,672.06/x
  3. Step 3: Cross multiply
    39,576.90x = 54,616.38 × 21,672.06
  4. Step 4: Simplify right side
    39,576.90x = 1,183,649,178.26
  5. Step 5: Solve for x
    x = 1,183,649,178.26/39,576.90
  6. Step 6: Final answer
    x = 29,907.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.