Home / 31,647.44-43,672.15-18,220.07

Finding the Fourth Proportional to 31,647.44, 43,672.15 and 18,220.07

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Solution

The fourth proportional to 31,647.44, 43,672.15 and 18,220.07 is: 25,142.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,647.44 : 43,672.15 = 18,220.07 : x
  2. Step 2: Convert to fraction form
    31,647.44/43,672.15 = 18,220.07/x
  3. Step 3: Cross multiply
    31,647.44x = 43,672.15 × 18,220.07
  4. Step 4: Simplify right side
    31,647.44x = 795,709,630.05
  5. Step 5: Solve for x
    x = 795,709,630.05/31,647.44
  6. Step 6: Final answer
    x = 25,142.94

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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.