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Finding the Fourth Proportional to 18,259.52, 27,388.56 and 12,696.48

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Solution

The fourth proportional to 18,259.52, 27,388.56 and 12,696.48 is: 19,044.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.52 : 27,388.56 = 12,696.48 : x
  2. Step 2: Convert to fraction form
    18,259.52/27,388.56 = 12,696.48/x
  3. Step 3: Cross multiply
    18,259.52x = 27,388.56 × 12,696.48
  4. Step 4: Simplify right side
    18,259.52x = 347,738,304.27
  5. Step 5: Solve for x
    x = 347,738,304.27/18,259.52
  6. Step 6: Final answer
    x = 19,044.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.