Home / 20,943.77-31,415.64-5,361.37

Finding the Fourth Proportional to 20,943.77, 31,415.64 and 5,361.37

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Solution

The fourth proportional to 20,943.77, 31,415.64 and 5,361.37 is: 8,042.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.77 : 31,415.64 = 5,361.37 : x
  2. Step 2: Convert to fraction form
    20,943.77/31,415.64 = 5,361.37/x
  3. Step 3: Cross multiply
    20,943.77x = 31,415.64 × 5,361.37
  4. Step 4: Simplify right side
    20,943.77x = 168,430,843.02
  5. Step 5: Solve for x
    x = 168,430,843.02/20,943.77
  6. Step 6: Final answer
    x = 8,042.05

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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.