Home / 20,273.45-27,990.18-13,910.67

Finding the Fourth Proportional to 20,273.45, 27,990.18 and 13,910.67

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Solution

The fourth proportional to 20,273.45, 27,990.18 and 13,910.67 is: 19,205.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.45 : 27,990.18 = 13,910.67 : x
  2. Step 2: Convert to fraction form
    20,273.45/27,990.18 = 13,910.67/x
  3. Step 3: Cross multiply
    20,273.45x = 27,990.18 × 13,910.67
  4. Step 4: Simplify right side
    20,273.45x = 389,362,157.22
  5. Step 5: Solve for x
    x = 389,362,157.22/20,273.45
  6. Step 6: Final answer
    x = 19,205.53

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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.