Home / 12,211.03-18,315.53-3,890.71

Finding the Fourth Proportional to 12,211.03, 18,315.53 and 3,890.71

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Solution

The fourth proportional to 12,211.03, 18,315.53 and 3,890.71 is: 5,835.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.03 : 18,315.53 = 3,890.71 : x
  2. Step 2: Convert to fraction form
    12,211.03/18,315.53 = 3,890.71/x
  3. Step 3: Cross multiply
    12,211.03x = 18,315.53 × 3,890.71
  4. Step 4: Simplify right side
    12,211.03x = 71,260,415.73
  5. Step 5: Solve for x
    x = 71,260,415.73/12,211.03
  6. Step 6: Final answer
    x = 5,835.74

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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.