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Finding the Fourth Proportional to 10,889.40, 16,334.10 and 6,504.60

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Solution

The fourth proportional to 10,889.40, 16,334.10 and 6,504.60 is: 9,756.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.40 : 16,334.10 = 6,504.60 : x
  2. Step 2: Convert to fraction form
    10,889.40/16,334.10 = 6,504.60/x
  3. Step 3: Cross multiply
    10,889.40x = 16,334.10 × 6,504.60
  4. Step 4: Simplify right side
    10,889.40x = 106,246,786.86
  5. Step 5: Solve for x
    x = 106,246,786.86/10,889.40
  6. Step 6: Final answer
    x = 9,756.90

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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.