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Finding the Fourth Proportional to 11,805.03, 16,290.99 and 7,089.39

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Solution

The fourth proportional to 11,805.03, 16,290.99 and 7,089.39 is: 9,783.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,805.03 : 16,290.99 = 7,089.39 : x
  2. Step 2: Convert to fraction form
    11,805.03/16,290.99 = 7,089.39/x
  3. Step 3: Cross multiply
    11,805.03x = 16,290.99 × 7,089.39
  4. Step 4: Simplify right side
    11,805.03x = 115,493,181.60
  5. Step 5: Solve for x
    x = 115,493,181.60/11,805.03
  6. Step 6: Final answer
    x = 9,783.39

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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.