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Finding the Fourth Proportional to 14,704.35, 20,292.18 and 7,990.09

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Solution

The fourth proportional to 14,704.35, 20,292.18 and 7,990.09 is: 11,026.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,704.35 : 20,292.18 = 7,990.09 : x
  2. Step 2: Convert to fraction form
    14,704.35/20,292.18 = 7,990.09/x
  3. Step 3: Cross multiply
    14,704.35x = 20,292.18 × 7,990.09
  4. Step 4: Simplify right side
    14,704.35x = 162,136,344.50
  5. Step 5: Solve for x
    x = 162,136,344.50/14,704.35
  6. Step 6: Final answer
    x = 11,026.42

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.