Home / 12,286.86-18,398.16-6,728.64

Finding the Fourth Proportional to 12,286.86, 18,398.16 and 6,728.64

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Solution

The fourth proportional to 12,286.86, 18,398.16 and 6,728.64 is: 10,075.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.86 : 18,398.16 = 6,728.64 : x
  2. Step 2: Convert to fraction form
    12,286.86/18,398.16 = 6,728.64/x
  3. Step 3: Cross multiply
    12,286.86x = 18,398.16 × 6,728.64
  4. Step 4: Simplify right side
    12,286.86x = 123,794,595.30
  5. Step 5: Solve for x
    x = 123,794,595.30/12,286.86
  6. Step 6: Final answer
    x = 10,075.36

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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.