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Finding the Fourth Proportional to 17,643.35, 26,451.09 and 12,079.80

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Solution

The fourth proportional to 17,643.35, 26,451.09 and 12,079.80 is: 18,110.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,643.35 : 26,451.09 = 12,079.80 : x
  2. Step 2: Convert to fraction form
    17,643.35/26,451.09 = 12,079.80/x
  3. Step 3: Cross multiply
    17,643.35x = 26,451.09 × 12,079.80
  4. Step 4: Simplify right side
    17,643.35x = 319,523,876.98
  5. Step 5: Solve for x
    x = 319,523,876.98/17,643.35
  6. Step 6: Final answer
    x = 18,110.16

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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.