Home / 31,548.75-43,537.31-18,122.60

Finding the Fourth Proportional to 31,548.75, 43,537.31 and 18,122.60

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Solution

The fourth proportional to 31,548.75, 43,537.31 and 18,122.60 is: 25,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,548.75 : 43,537.31 = 18,122.60 : x
  2. Step 2: Convert to fraction form
    31,548.75/43,537.31 = 18,122.60/x
  3. Step 3: Cross multiply
    31,548.75x = 43,537.31 × 18,122.60
  4. Step 4: Simplify right side
    31,548.75x = 789,009,163.59
  5. Step 5: Solve for x
    x = 789,009,163.59/31,548.75
  6. Step 6: Final answer
    x = 25,009.21

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1.5x scale

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.