Home / 13,636.64-20,455.68-4,403.36

Finding the Fourth Proportional to 13,636.64, 20,455.68 and 4,403.36

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Solution

The fourth proportional to 13,636.64, 20,455.68 and 4,403.36 is: 6,605.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.64 : 20,455.68 = 4,403.36 : x
  2. Step 2: Convert to fraction form
    13,636.64/20,455.68 = 4,403.36/x
  3. Step 3: Cross multiply
    13,636.64x = 20,455.68 × 4,403.36
  4. Step 4: Simplify right side
    13,636.64x = 90,073,723.08
  5. Step 5: Solve for x
    x = 90,073,723.08/13,636.64
  6. Step 6: Final answer
    x = 6,605.27

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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.