Home / 18,724.07-28,086.68-8,188.67

Finding the Fourth Proportional to 18,724.07, 28,086.68 and 8,188.67

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Solution

The fourth proportional to 18,724.07, 28,086.68 and 8,188.67 is: 12,283.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.07 : 28,086.68 = 8,188.67 : x
  2. Step 2: Convert to fraction form
    18,724.07/28,086.68 = 8,188.67/x
  3. Step 3: Cross multiply
    18,724.07x = 28,086.68 × 8,188.67
  4. Step 4: Simplify right side
    18,724.07x = 229,992,553.92
  5. Step 5: Solve for x
    x = 229,992,553.92/18,724.07
  6. Step 6: Final answer
    x = 12,283.26

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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.