Home / 20,519.21-30,768.28-9,416.34

Finding the Fourth Proportional to 20,519.21, 30,768.28 and 9,416.34

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Solution

The fourth proportional to 20,519.21, 30,768.28 and 9,416.34 is: 14,119.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.21 : 30,768.28 = 9,416.34 : x
  2. Step 2: Convert to fraction form
    20,519.21/30,768.28 = 9,416.34/x
  3. Step 3: Cross multiply
    20,519.21x = 30,768.28 × 9,416.34
  4. Step 4: Simplify right side
    20,519.21x = 289,724,562.15
  5. Step 5: Solve for x
    x = 289,724,562.15/20,519.21
  6. Step 6: Final answer
    x = 14,119.67

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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.