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Finding the Fourth Proportional to 18,602.36, 27,917.22 and 13,685.48

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Solution

The fourth proportional to 18,602.36, 27,917.22 and 13,685.48 is: 20,538.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.36 : 27,917.22 = 13,685.48 : x
  2. Step 2: Convert to fraction form
    18,602.36/27,917.22 = 13,685.48/x
  3. Step 3: Cross multiply
    18,602.36x = 27,917.22 × 13,685.48
  4. Step 4: Simplify right side
    18,602.36x = 382,060,555.97
  5. Step 5: Solve for x
    x = 382,060,555.97/18,602.36
  6. Step 6: Final answer
    x = 20,538.28

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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.