Home / 13,678.26-20,517.81-4,318.36

Finding the Fourth Proportional to 13,678.26, 20,517.81 and 4,318.36

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Solution

The fourth proportional to 13,678.26, 20,517.81 and 4,318.36 is: 6,477.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.26 : 20,517.81 = 4,318.36 : x
  2. Step 2: Convert to fraction form
    13,678.26/20,517.81 = 4,318.36/x
  3. Step 3: Cross multiply
    13,678.26x = 20,517.81 × 4,318.36
  4. Step 4: Simplify right side
    13,678.26x = 88,603,289.99
  5. Step 5: Solve for x
    x = 88,603,289.99/13,678.26
  6. Step 6: Final answer
    x = 6,477.67

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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.