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Finding the Fourth Proportional to 11,777.95, 17,665.08 and 7,647.24

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Solution

The fourth proportional to 11,777.95, 17,665.08 and 7,647.24 is: 11,469.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,777.95 : 17,665.08 = 7,647.24 : x
  2. Step 2: Convert to fraction form
    11,777.95/17,665.08 = 7,647.24/x
  3. Step 3: Cross multiply
    11,777.95x = 17,665.08 × 7,647.24
  4. Step 4: Simplify right side
    11,777.95x = 135,089,106.38
  5. Step 5: Solve for x
    x = 135,089,106.38/11,777.95
  6. Step 6: Final answer
    x = 11,469.66

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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.