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Finding the Fourth Proportional to 18,690.73, 28,035.92 and 6,211.67

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Solution

The fourth proportional to 18,690.73, 28,035.92 and 6,211.67 is: 9,317.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.73 : 28,035.92 = 6,211.67 : x
  2. Step 2: Convert to fraction form
    18,690.73/28,035.92 = 6,211.67/x
  3. Step 3: Cross multiply
    18,690.73x = 28,035.92 × 6,211.67
  4. Step 4: Simplify right side
    18,690.73x = 174,149,852.13
  5. Step 5: Solve for x
    x = 174,149,852.13/18,690.73
  6. Step 6: Final answer
    x = 9,317.45

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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.