Home / 12,008.87-18,013.30-6,161.75

Finding the Fourth Proportional to 12,008.87, 18,013.30 and 6,161.75

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Solution

The fourth proportional to 12,008.87, 18,013.30 and 6,161.75 is: 9,242.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.87 : 18,013.30 = 6,161.75 : x
  2. Step 2: Convert to fraction form
    12,008.87/18,013.30 = 6,161.75/x
  3. Step 3: Cross multiply
    12,008.87x = 18,013.30 × 6,161.75
  4. Step 4: Simplify right side
    12,008.87x = 110,993,345.80
  5. Step 5: Solve for x
    x = 110,993,345.80/12,008.87
  6. Step 6: Final answer
    x = 9,242.62

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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.