Home / 12,235.80-18,344.70-3,911.01

Finding the Fourth Proportional to 12,235.80, 18,344.70 and 3,911.01

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Solution

The fourth proportional to 12,235.80, 18,344.70 and 3,911.01 is: 5,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.80 : 18,344.70 = 3,911.01 : x
  2. Step 2: Convert to fraction form
    12,235.80/18,344.70 = 3,911.01/x
  3. Step 3: Cross multiply
    12,235.80x = 18,344.70 × 3,911.01
  4. Step 4: Simplify right side
    12,235.80x = 71,746,305.15
  5. Step 5: Solve for x
    x = 71,746,305.15/12,235.80
  6. Step 6: Final answer
    x = 5,863.64

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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.