Home / 13,256.24-18,289.04-8,218.64

Finding the Fourth Proportional to 13,256.24, 18,289.04 and 8,218.64

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Solution

The fourth proportional to 13,256.24, 18,289.04 and 8,218.64 is: 11,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,256.24 : 18,289.04 = 8,218.64 : x
  2. Step 2: Convert to fraction form
    13,256.24/18,289.04 = 8,218.64/x
  3. Step 3: Cross multiply
    13,256.24x = 18,289.04 × 8,218.64
  4. Step 4: Simplify right side
    13,256.24x = 150,311,101.97
  5. Step 5: Solve for x
    x = 150,311,101.97/13,256.24
  6. Step 6: Final answer
    x = 11,338.90

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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.