Home / 13,518.72-20,289.60-7,963.92

Finding the Fourth Proportional to 13,518.72, 20,289.60 and 7,963.92

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Solution

The fourth proportional to 13,518.72, 20,289.60 and 7,963.92 is: 11,952.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.72 : 20,289.60 = 7,963.92 : x
  2. Step 2: Convert to fraction form
    13,518.72/20,289.60 = 7,963.92/x
  3. Step 3: Cross multiply
    13,518.72x = 20,289.60 × 7,963.92
  4. Step 4: Simplify right side
    13,518.72x = 161,584,751.23
  5. Step 5: Solve for x
    x = 161,584,751.23/13,518.72
  6. Step 6: Final answer
    x = 11,952.67

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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.