Home / 20,881.94-31,322.43-5,087.03

Finding the Fourth Proportional to 20,881.94, 31,322.43 and 5,087.03

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Solution

The fourth proportional to 20,881.94, 31,322.43 and 5,087.03 is: 7,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.94 : 31,322.43 = 5,087.03 : x
  2. Step 2: Convert to fraction form
    20,881.94/31,322.43 = 5,087.03/x
  3. Step 3: Cross multiply
    20,881.94x = 31,322.43 × 5,087.03
  4. Step 4: Simplify right side
    20,881.94x = 159,338,141.08
  5. Step 5: Solve for x
    x = 159,338,141.08/20,881.94
  6. Step 6: Final answer
    x = 7,630.43

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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.