Home / 13,119.78-19,672.38-5,319.48

Finding the Fourth Proportional to 13,119.78, 19,672.38 and 5,319.48

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Solution

The fourth proportional to 13,119.78, 19,672.38 and 5,319.48 is: 7,976.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.78 : 19,672.38 = 5,319.48 : x
  2. Step 2: Convert to fraction form
    13,119.78/19,672.38 = 5,319.48/x
  3. Step 3: Cross multiply
    13,119.78x = 19,672.38 × 5,319.48
  4. Step 4: Simplify right side
    13,119.78x = 104,646,831.96
  5. Step 5: Solve for x
    x = 104,646,831.96/13,119.78
  6. Step 6: Final answer
    x = 7,976.26

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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.