Home / 21,925.24-30,249.68-13,418.51

Finding the Fourth Proportional to 21,925.24, 30,249.68 and 13,418.51

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Solution

The fourth proportional to 21,925.24, 30,249.68 and 13,418.51 is: 18,513.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,925.24 : 30,249.68 = 13,418.51 : x
  2. Step 2: Convert to fraction form
    21,925.24/30,249.68 = 13,418.51/x
  3. Step 3: Cross multiply
    21,925.24x = 30,249.68 × 13,418.51
  4. Step 4: Simplify right side
    21,925.24x = 405,905,415.24
  5. Step 5: Solve for x
    x = 405,905,415.24/21,925.24
  6. Step 6: Final answer
    x = 18,513.16

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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.