Home / 12,658.26-18,998.94-6,422.56

Finding the Fourth Proportional to 12,658.26, 18,998.94 and 6,422.56

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Solution

The fourth proportional to 12,658.26, 18,998.94 and 6,422.56 is: 9,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.26 : 18,998.94 = 6,422.56 : x
  2. Step 2: Convert to fraction form
    12,658.26/18,998.94 = 6,422.56/x
  3. Step 3: Cross multiply
    12,658.26x = 18,998.94 × 6,422.56
  4. Step 4: Simplify right side
    12,658.26x = 122,021,832.09
  5. Step 5: Solve for x
    x = 122,021,832.09/12,658.26
  6. Step 6: Final answer
    x = 9,639.70

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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.