Home / 12,622.88-18,933.64-3,857.11

Finding the Fourth Proportional to 12,622.88, 18,933.64 and 3,857.11

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Solution

The fourth proportional to 12,622.88, 18,933.64 and 3,857.11 is: 5,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.88 : 18,933.64 = 3,857.11 : x
  2. Step 2: Convert to fraction form
    12,622.88/18,933.64 = 3,857.11/x
  3. Step 3: Cross multiply
    12,622.88x = 18,933.64 × 3,857.11
  4. Step 4: Simplify right side
    12,622.88x = 73,029,075.20
  5. Step 5: Solve for x
    x = 73,029,075.20/12,622.88
  6. Step 6: Final answer
    x = 5,785.45

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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.