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Finding the Fourth Proportional to 17,128.68, 25,696.38 and 7,267.88

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Solution

The fourth proportional to 17,128.68, 25,696.38 and 7,267.88 is: 10,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,128.68 : 25,696.38 = 7,267.88 : x
  2. Step 2: Convert to fraction form
    17,128.68/25,696.38 = 7,267.88/x
  3. Step 3: Cross multiply
    17,128.68x = 25,696.38 × 7,267.88
  4. Step 4: Simplify right side
    17,128.68x = 186,758,206.27
  5. Step 5: Solve for x
    x = 186,758,206.27/17,128.68
  6. Step 6: Final answer
    x = 10,903.25

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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.