Home / 13,653.36-20,518.60-8,107.76

Finding the Fourth Proportional to 13,653.36, 20,518.60 and 8,107.76

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Solution

The fourth proportional to 13,653.36, 20,518.60 and 8,107.76 is: 12,184.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.36 : 20,518.60 = 8,107.76 : x
  2. Step 2: Convert to fraction form
    13,653.36/20,518.60 = 8,107.76/x
  3. Step 3: Cross multiply
    13,653.36x = 20,518.60 × 8,107.76
  4. Step 4: Simplify right side
    13,653.36x = 166,359,884.34
  5. Step 5: Solve for x
    x = 166,359,884.34/13,653.36
  6. Step 6: Final answer
    x = 12,184.54

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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.