Home / 26,981.90-40,460.70-12,183.20

Finding the Fourth Proportional to 26,981.90, 40,460.70 and 12,183.20

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Solution

The fourth proportional to 26,981.90, 40,460.70 and 12,183.20 is: 18,269.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,981.90 : 40,460.70 = 12,183.20 : x
  2. Step 2: Convert to fraction form
    26,981.90/40,460.70 = 12,183.20/x
  3. Step 3: Cross multiply
    26,981.90x = 40,460.70 × 12,183.20
  4. Step 4: Simplify right side
    26,981.90x = 492,940,800.24
  5. Step 5: Solve for x
    x = 492,940,800.24/26,981.90
  6. Step 6: Final answer
    x = 18,269.31

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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.