Home / 39,866.31-55,014.21-21,961.26

Finding the Fourth Proportional to 39,866.31, 55,014.21 and 21,961.26

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Solution

The fourth proportional to 39,866.31, 55,014.21 and 21,961.26 is: 30,305.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,866.31 : 55,014.21 = 21,961.26 : x
  2. Step 2: Convert to fraction form
    39,866.31/55,014.21 = 21,961.26/x
  3. Step 3: Cross multiply
    39,866.31x = 55,014.21 × 21,961.26
  4. Step 4: Simplify right side
    39,866.31x = 1,208,181,369.50
  5. Step 5: Solve for x
    x = 1,208,181,369.50/39,866.31
  6. Step 6: Final answer
    x = 30,305.82

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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.