Home / 13,708.25-18,916.97-7,739.56

Finding the Fourth Proportional to 13,708.25, 18,916.97 and 7,739.56

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Solution

The fourth proportional to 13,708.25, 18,916.97 and 7,739.56 is: 10,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.25 : 18,916.97 = 7,739.56 : x
  2. Step 2: Convert to fraction form
    13,708.25/18,916.97 = 7,739.56/x
  3. Step 3: Cross multiply
    13,708.25x = 18,916.97 × 7,739.56
  4. Step 4: Simplify right side
    13,708.25x = 146,408,938.34
  5. Step 5: Solve for x
    x = 146,408,938.34/13,708.25
  6. Step 6: Final answer
    x = 10,680.36

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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.