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Finding the Fourth Proportional to 17,656.56, 26,487 and 7,271.28

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Solution

The fourth proportional to 17,656.56, 26,487 and 7,271.28 is: 10,907.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,656.56 : 26,487 = 7,271.28 : x
  2. Step 2: Convert to fraction form
    17,656.56/26,487 = 7,271.28/x
  3. Step 3: Cross multiply
    17,656.56x = 26,487 × 7,271.28
  4. Step 4: Simplify right side
    17,656.56x = 192,594,393.36
  5. Step 5: Solve for x
    x = 192,594,393.36/17,656.56
  6. Step 6: Final answer
    x = 10,907.81

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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.