Home / 13,890.54-19,163.78-8,853.60

Finding the Fourth Proportional to 13,890.54, 19,163.78 and 8,853.60

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Solution

The fourth proportional to 13,890.54, 19,163.78 and 8,853.60 is: 12,214.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.54 : 19,163.78 = 8,853.60 : x
  2. Step 2: Convert to fraction form
    13,890.54/19,163.78 = 8,853.60/x
  3. Step 3: Cross multiply
    13,890.54x = 19,163.78 × 8,853.60
  4. Step 4: Simplify right side
    13,890.54x = 169,668,302.52
  5. Step 5: Solve for x
    x = 169,668,302.52/13,890.54
  6. Step 6: Final answer
    x = 12,214.67

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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.