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Finding the Fourth Proportional to 18,128.64, 25,042.77 and 17,182.80

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Solution

The fourth proportional to 18,128.64, 25,042.77 and 17,182.80 is: 23,736.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.64 : 25,042.77 = 17,182.80 : x
  2. Step 2: Convert to fraction form
    18,128.64/25,042.77 = 17,182.80/x
  3. Step 3: Cross multiply
    18,128.64x = 25,042.77 × 17,182.80
  4. Step 4: Simplify right side
    18,128.64x = 430,304,908.36
  5. Step 5: Solve for x
    x = 430,304,908.36/18,128.64
  6. Step 6: Final answer
    x = 23,736.19

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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.