Home / 13,668.21-18,865.20-8,949.75

Finding the Fourth Proportional to 13,668.21, 18,865.20 and 8,949.75

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Solution

The fourth proportional to 13,668.21, 18,865.20 and 8,949.75 is: 12,352.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.21 : 18,865.20 = 8,949.75 : x
  2. Step 2: Convert to fraction form
    13,668.21/18,865.20 = 8,949.75/x
  3. Step 3: Cross multiply
    13,668.21x = 18,865.20 × 8,949.75
  4. Step 4: Simplify right side
    13,668.21x = 168,838,823.70
  5. Step 5: Solve for x
    x = 168,838,823.70/13,668.21
  6. Step 6: Final answer
    x = 12,352.67

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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.