Home / 11,990.45-17,988.71-4,199.06

Finding the Fourth Proportional to 11,990.45, 17,988.71 and 4,199.06

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Solution

The fourth proportional to 11,990.45, 17,988.71 and 4,199.06 is: 6,299.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.45 : 17,988.71 = 4,199.06 : x
  2. Step 2: Convert to fraction form
    11,990.45/17,988.71 = 4,199.06/x
  3. Step 3: Cross multiply
    11,990.45x = 17,988.71 × 4,199.06
  4. Step 4: Simplify right side
    11,990.45x = 75,535,561.67
  5. Step 5: Solve for x
    x = 75,535,561.67/11,990.45
  6. Step 6: Final answer
    x = 6,299.65

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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.