Home / 10,972.80-16,464.60-4,399.20

Finding the Fourth Proportional to 10,972.80, 16,464.60 and 4,399.20

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Solution

The fourth proportional to 10,972.80, 16,464.60 and 4,399.20 is: 6,600.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.80 : 16,464.60 = 4,399.20 : x
  2. Step 2: Convert to fraction form
    10,972.80/16,464.60 = 4,399.20/x
  3. Step 3: Cross multiply
    10,972.80x = 16,464.60 × 4,399.20
  4. Step 4: Simplify right side
    10,972.80x = 72,431,068.32
  5. Step 5: Solve for x
    x = 72,431,068.32/10,972.80
  6. Step 6: Final answer
    x = 6,600.96

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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.