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Finding the Fourth Proportional to 11,290.68, 16,946.94 and 5,451.40

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Solution

The fourth proportional to 11,290.68, 16,946.94 and 5,451.40 is: 8,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.68 : 16,946.94 = 5,451.40 : x
  2. Step 2: Convert to fraction form
    11,290.68/16,946.94 = 5,451.40/x
  3. Step 3: Cross multiply
    11,290.68x = 16,946.94 × 5,451.40
  4. Step 4: Simplify right side
    11,290.68x = 92,384,548.72
  5. Step 5: Solve for x
    x = 92,384,548.72/11,290.68
  6. Step 6: Final answer
    x = 8,182.37

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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.