Home / 12,187.36-18,288.28-4,396.78

Finding the Fourth Proportional to 12,187.36, 18,288.28 and 4,396.78

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Solution

The fourth proportional to 12,187.36, 18,288.28 and 4,396.78 is: 6,597.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.36 : 18,288.28 = 4,396.78 : x
  2. Step 2: Convert to fraction form
    12,187.36/18,288.28 = 4,396.78/x
  3. Step 3: Cross multiply
    12,187.36x = 18,288.28 × 4,396.78
  4. Step 4: Simplify right side
    12,187.36x = 80,409,572.09
  5. Step 5: Solve for x
    x = 80,409,572.09/12,187.36
  6. Step 6: Final answer
    x = 6,597.78

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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.