Home / 12,340.44-18,521.01-6,420.96

Finding the Fourth Proportional to 12,340.44, 18,521.01 and 6,420.96

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Solution

The fourth proportional to 12,340.44, 18,521.01 and 6,420.96 is: 9,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.44 : 18,521.01 = 6,420.96 : x
  2. Step 2: Convert to fraction form
    12,340.44/18,521.01 = 6,420.96/x
  3. Step 3: Cross multiply
    12,340.44x = 18,521.01 × 6,420.96
  4. Step 4: Simplify right side
    12,340.44x = 118,922,664.37
  5. Step 5: Solve for x
    x = 118,922,664.37/12,340.44
  6. Step 6: Final answer
    x = 9,636.83

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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.