Home / 12,018.05-18,028.80-3,698.77

Finding the Fourth Proportional to 12,018.05, 18,028.80 and 3,698.77

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Solution

The fourth proportional to 12,018.05, 18,028.80 and 3,698.77 is: 5,548.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.05 : 18,028.80 = 3,698.77 : x
  2. Step 2: Convert to fraction form
    12,018.05/18,028.80 = 3,698.77/x
  3. Step 3: Cross multiply
    12,018.05x = 18,028.80 × 3,698.77
  4. Step 4: Simplify right side
    12,018.05x = 66,684,384.58
  5. Step 5: Solve for x
    x = 66,684,384.58/12,018.05
  6. Step 6: Final answer
    x = 5,548.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.