Home / 13,599.75-20,399.64-8,664.42

Finding the Fourth Proportional to 13,599.75, 20,399.64 and 8,664.42

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Solution

The fourth proportional to 13,599.75, 20,399.64 and 8,664.42 is: 12,996.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.75 : 20,399.64 = 8,664.42 : x
  2. Step 2: Convert to fraction form
    13,599.75/20,399.64 = 8,664.42/x
  3. Step 3: Cross multiply
    13,599.75x = 20,399.64 × 8,664.42
  4. Step 4: Simplify right side
    13,599.75x = 176,751,048.81
  5. Step 5: Solve for x
    x = 176,751,048.81/13,599.75
  6. Step 6: Final answer
    x = 12,996.64

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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.