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Finding the Fourth Proportional to 17,998.61, 26,997.65 and 8,130.98

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Solution

The fourth proportional to 17,998.61, 26,997.65 and 8,130.98 is: 12,196.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,998.61 : 26,997.65 = 8,130.98 : x
  2. Step 2: Convert to fraction form
    17,998.61/26,997.65 = 8,130.98/x
  3. Step 3: Cross multiply
    17,998.61x = 26,997.65 × 8,130.98
  4. Step 4: Simplify right side
    17,998.61x = 219,517,455.26
  5. Step 5: Solve for x
    x = 219,517,455.26/17,998.61
  6. Step 6: Final answer
    x = 12,196.36

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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.