Home / 12,738.81-19,108.44-4,419.12

Finding the Fourth Proportional to 12,738.81, 19,108.44 and 4,419.12

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Solution

The fourth proportional to 12,738.81, 19,108.44 and 4,419.12 is: 6,628.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.81 : 19,108.44 = 4,419.12 : x
  2. Step 2: Convert to fraction form
    12,738.81/19,108.44 = 4,419.12/x
  3. Step 3: Cross multiply
    12,738.81x = 19,108.44 × 4,419.12
  4. Step 4: Simplify right side
    12,738.81x = 84,442,489.37
  5. Step 5: Solve for x
    x = 84,442,489.37/12,738.81
  6. Step 6: Final answer
    x = 6,628.76

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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.