Home / 17,121.12-23,620.11-10,405.67

Finding the Fourth Proportional to 17,121.12, 23,620.11 and 10,405.67

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Solution

The fourth proportional to 17,121.12, 23,620.11 and 10,405.67 is: 14,355.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121.12 : 23,620.11 = 10,405.67 : x
  2. Step 2: Convert to fraction form
    17,121.12/23,620.11 = 10,405.67/x
  3. Step 3: Cross multiply
    17,121.12x = 23,620.11 × 10,405.67
  4. Step 4: Simplify right side
    17,121.12x = 245,782,951.92
  5. Step 5: Solve for x
    x = 245,782,951.92/17,121.12
  6. Step 6: Final answer
    x = 14,355.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.