Home / 23,180.90-31,991.40-13,109.54

Finding the Fourth Proportional to 23,180.90, 31,991.40 and 13,109.54

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Solution

The fourth proportional to 23,180.90, 31,991.40 and 13,109.54 is: 18,092.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,180.90 : 31,991.40 = 13,109.54 : x
  2. Step 2: Convert to fraction form
    23,180.90/31,991.40 = 13,109.54/x
  3. Step 3: Cross multiply
    23,180.90x = 31,991.40 × 13,109.54
  4. Step 4: Simplify right side
    23,180.90x = 419,392,378.00
  5. Step 5: Solve for x
    x = 419,392,378.00/23,180.90
  6. Step 6: Final answer
    x = 18,092.16

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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.