Home / 13,889.95-19,163.37-7,917.31

Finding the Fourth Proportional to 13,889.95, 19,163.37 and 7,917.31

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Solution

The fourth proportional to 13,889.95, 19,163.37 and 7,917.31 is: 10,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.95 : 19,163.37 = 7,917.31 : x
  2. Step 2: Convert to fraction form
    13,889.95/19,163.37 = 7,917.31/x
  3. Step 3: Cross multiply
    13,889.95x = 19,163.37 × 7,917.31
  4. Step 4: Simplify right side
    13,889.95x = 151,722,301.35
  5. Step 5: Solve for x
    x = 151,722,301.35/13,889.95
  6. Step 6: Final answer
    x = 10,923.17

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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.