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Finding the Fourth Proportional to 10,999.40, 16,500.60 and 3,977.70

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Solution

The fourth proportional to 10,999.40, 16,500.60 and 3,977.70 is: 5,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.40 : 16,500.60 = 3,977.70 : x
  2. Step 2: Convert to fraction form
    10,999.40/16,500.60 = 3,977.70/x
  3. Step 3: Cross multiply
    10,999.40x = 16,500.60 × 3,977.70
  4. Step 4: Simplify right side
    10,999.40x = 65,634,436.62
  5. Step 5: Solve for x
    x = 65,634,436.62/10,999.40
  6. Step 6: Final answer
    x = 5,967.10

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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.