Home / 12,257.80-18,398.22-6,418.60

Finding the Fourth Proportional to 12,257.80, 18,398.22 and 6,418.60

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Solution

The fourth proportional to 12,257.80, 18,398.22 and 6,418.60 is: 9,633.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,257.80 : 18,398.22 = 6,418.60 : x
  2. Step 2: Convert to fraction form
    12,257.80/18,398.22 = 6,418.60/x
  3. Step 3: Cross multiply
    12,257.80x = 18,398.22 × 6,418.60
  4. Step 4: Simplify right side
    12,257.80x = 118,090,814.89
  5. Step 5: Solve for x
    x = 118,090,814.89/12,257.80
  6. Step 6: Final answer
    x = 9,633.93

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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.