Home / 9,621.60-14,428.80-3,379.20

Finding the Fourth Proportional to 9,621.60, 14,428.80 and 3,379.20

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Solution

The fourth proportional to 9,621.60, 14,428.80 and 3,379.20 is: 5,067.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.60 : 14,428.80 = 3,379.20 : x
  2. Step 2: Convert to fraction form
    9,621.60/14,428.80 = 3,379.20/x
  3. Step 3: Cross multiply
    9,621.60x = 14,428.80 × 3,379.20
  4. Step 4: Simplify right side
    9,621.60x = 48,757,800.96
  5. Step 5: Solve for x
    x = 48,757,800.96/9,621.60
  6. Step 6: Final answer
    x = 5,067.54

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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.