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Finding the Fourth Proportional to 18,656.88, 27,985.32 and 6,173.56

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Solution

The fourth proportional to 18,656.88, 27,985.32 and 6,173.56 is: 9,260.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.88 : 27,985.32 = 6,173.56 : x
  2. Step 2: Convert to fraction form
    18,656.88/27,985.32 = 6,173.56/x
  3. Step 3: Cross multiply
    18,656.88x = 27,985.32 × 6,173.56
  4. Step 4: Simplify right side
    18,656.88x = 172,769,052.14
  5. Step 5: Solve for x
    x = 172,769,052.14/18,656.88
  6. Step 6: Final answer
    x = 9,260.34

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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.