Home / 21,198.24-29,253.69-13,245.08

Finding the Fourth Proportional to 21,198.24, 29,253.69 and 13,245.08

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Solution

The fourth proportional to 21,198.24, 29,253.69 and 13,245.08 is: 18,278.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.24 : 29,253.69 = 13,245.08 : x
  2. Step 2: Convert to fraction form
    21,198.24/29,253.69 = 13,245.08/x
  3. Step 3: Cross multiply
    21,198.24x = 29,253.69 × 13,245.08
  4. Step 4: Simplify right side
    21,198.24x = 387,467,464.35
  5. Step 5: Solve for x
    x = 387,467,464.35/21,198.24
  6. Step 6: Final answer
    x = 18,278.28

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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.