Home / 30,830.03-42,546.30-18,726.44

Finding the Fourth Proportional to 30,830.03, 42,546.30 and 18,726.44

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Solution

The fourth proportional to 30,830.03, 42,546.30 and 18,726.44 is: 25,843.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,830.03 : 42,546.30 = 18,726.44 : x
  2. Step 2: Convert to fraction form
    30,830.03/42,546.30 = 18,726.44/x
  3. Step 3: Cross multiply
    30,830.03x = 42,546.30 × 18,726.44
  4. Step 4: Simplify right side
    30,830.03x = 796,740,521.44
  5. Step 5: Solve for x
    x = 796,740,521.44/30,830.03
  6. Step 6: Final answer
    x = 25,843.01

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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.