Home / 10,435.30-15,639.09-3,855.42

Finding the Fourth Proportional to 10,435.30, 15,639.09 and 3,855.42

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Solution

The fourth proportional to 10,435.30, 15,639.09 and 3,855.42 is: 5,778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,435.30 : 15,639.09 = 3,855.42 : x
  2. Step 2: Convert to fraction form
    10,435.30/15,639.09 = 3,855.42/x
  3. Step 3: Cross multiply
    10,435.30x = 15,639.09 × 3,855.42
  4. Step 4: Simplify right side
    10,435.30x = 60,295,260.37
  5. Step 5: Solve for x
    x = 60,295,260.37/10,435.30
  6. Step 6: Final answer
    x = 5,778.01

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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.