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Finding the Fourth Proportional to 17,987.82, 26,970.06 and 8,627.64

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Solution

The fourth proportional to 17,987.82, 26,970.06 and 8,627.64 is: 12,935.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.82 : 26,970.06 = 8,627.64 : x
  2. Step 2: Convert to fraction form
    17,987.82/26,970.06 = 8,627.64/x
  3. Step 3: Cross multiply
    17,987.82x = 26,970.06 × 8,627.64
  4. Step 4: Simplify right side
    17,987.82x = 232,687,968.46
  5. Step 5: Solve for x
    x = 232,687,968.46/17,987.82
  6. Step 6: Final answer
    x = 12,935.86

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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.