Home / 12,069.85-18,107.19-4,172.65

Finding the Fourth Proportional to 12,069.85, 18,107.19 and 4,172.65

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Solution

The fourth proportional to 12,069.85, 18,107.19 and 4,172.65 is: 6,259.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,069.85 : 18,107.19 = 4,172.65 : x
  2. Step 2: Convert to fraction form
    12,069.85/18,107.19 = 4,172.65/x
  3. Step 3: Cross multiply
    12,069.85x = 18,107.19 × 4,172.65
  4. Step 4: Simplify right side
    12,069.85x = 75,554,966.35
  5. Step 5: Solve for x
    x = 75,554,966.35/12,069.85
  6. Step 6: Final answer
    x = 6,259.81

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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.