Home / 28,639.05-42,975.32-11,997.67

Finding the Fourth Proportional to 28,639.05, 42,975.32 and 11,997.67

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Solution

The fourth proportional to 28,639.05, 42,975.32 and 11,997.67 is: 18,003.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.05 : 42,975.32 = 11,997.67 : x
  2. Step 2: Convert to fraction form
    28,639.05/42,975.32 = 11,997.67/x
  3. Step 3: Cross multiply
    28,639.05x = 42,975.32 × 11,997.67
  4. Step 4: Simplify right side
    28,639.05x = 515,603,707.50
  5. Step 5: Solve for x
    x = 515,603,707.50/28,639.05
  6. Step 6: Final answer
    x = 18,003.52

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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.