Home / 21,198.15-29,253.56-13,244.99

Finding the Fourth Proportional to 21,198.15, 29,253.56 and 13,244.99

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Solution

The fourth proportional to 21,198.15, 29,253.56 and 13,244.99 is: 18,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.15 : 29,253.56 = 13,244.99 : x
  2. Step 2: Convert to fraction form
    21,198.15/29,253.56 = 13,244.99/x
  3. Step 3: Cross multiply
    21,198.15x = 29,253.56 × 13,244.99
  4. Step 4: Simplify right side
    21,198.15x = 387,463,109.66
  5. Step 5: Solve for x
    x = 387,463,109.66/21,198.15
  6. Step 6: Final answer
    x = 18,278.16

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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.