Home / 12,983.78-19,474.23-4,218.68

Finding the Fourth Proportional to 12,983.78, 19,474.23 and 4,218.68

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Solution

The fourth proportional to 12,983.78, 19,474.23 and 4,218.68 is: 6,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,983.78 : 19,474.23 = 4,218.68 : x
  2. Step 2: Convert to fraction form
    12,983.78/19,474.23 = 4,218.68/x
  3. Step 3: Cross multiply
    12,983.78x = 19,474.23 × 4,218.68
  4. Step 4: Simplify right side
    12,983.78x = 82,155,544.62
  5. Step 5: Solve for x
    x = 82,155,544.62/12,983.78
  6. Step 6: Final answer
    x = 6,327.55

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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.