Home / 13,326.24-18,391.68-8,021.28

Finding the Fourth Proportional to 13,326.24, 18,391.68 and 8,021.28

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Solution

The fourth proportional to 13,326.24, 18,391.68 and 8,021.28 is: 11,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.24 : 18,391.68 = 8,021.28 : x
  2. Step 2: Convert to fraction form
    13,326.24/18,391.68 = 8,021.28/x
  3. Step 3: Cross multiply
    13,326.24x = 18,391.68 × 8,021.28
  4. Step 4: Simplify right side
    13,326.24x = 147,524,814.95
  5. Step 5: Solve for x
    x = 147,524,814.95/13,326.24
  6. Step 6: Final answer
    x = 11,070.25

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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.