Home / 39,893.07-55,052.82-21,988.77

Finding the Fourth Proportional to 39,893.07, 55,052.82 and 21,988.77

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Solution

The fourth proportional to 39,893.07, 55,052.82 and 21,988.77 is: 30,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,893.07 : 55,052.82 = 21,988.77 : x
  2. Step 2: Convert to fraction form
    39,893.07/55,052.82 = 21,988.77/x
  3. Step 3: Cross multiply
    39,893.07x = 55,052.82 × 21,988.77
  4. Step 4: Simplify right side
    39,893.07x = 1,210,543,796.83
  5. Step 5: Solve for x
    x = 1,210,543,796.83/39,893.07
  6. Step 6: Final answer
    x = 30,344.71

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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.