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Finding the Fourth Proportional to 11,089.71, 16,621.20 and 4,420.98

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Solution

The fourth proportional to 11,089.71, 16,621.20 and 4,420.98 is: 6,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,089.71 : 16,621.20 = 4,420.98 : x
  2. Step 2: Convert to fraction form
    11,089.71/16,621.20 = 4,420.98/x
  3. Step 3: Cross multiply
    11,089.71x = 16,621.20 × 4,420.98
  4. Step 4: Simplify right side
    11,089.71x = 73,481,992.78
  5. Step 5: Solve for x
    x = 73,481,992.78/11,089.71
  6. Step 6: Final answer
    x = 6,626.14

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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.