Home / 22,418.12-30,935.82-12,857.51

Finding the Fourth Proportional to 22,418.12, 30,935.82 and 12,857.51

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Solution

The fourth proportional to 22,418.12, 30,935.82 and 12,857.51 is: 17,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,418.12 : 30,935.82 = 12,857.51 : x
  2. Step 2: Convert to fraction form
    22,418.12/30,935.82 = 12,857.51/x
  3. Step 3: Cross multiply
    22,418.12x = 30,935.82 × 12,857.51
  4. Step 4: Simplify right side
    22,418.12x = 397,757,726.24
  5. Step 5: Solve for x
    x = 397,757,726.24/22,418.12
  6. Step 6: Final answer
    x = 17,742.69

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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.