Home / 12,485-18,741.90-6,341.96

Finding the Fourth Proportional to 12,485, 18,741.90 and 6,341.96

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Solution

The fourth proportional to 12,485, 18,741.90 and 6,341.96 is: 9,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485 : 18,741.90 = 6,341.96 : x
  2. Step 2: Convert to fraction form
    12,485/18,741.90 = 6,341.96/x
  3. Step 3: Cross multiply
    12,485x = 18,741.90 × 6,341.96
  4. Step 4: Simplify right side
    12,485x = 118,860,380.12
  5. Step 5: Solve for x
    x = 118,860,380.12/12,485
  6. Step 6: Final answer
    x = 9,520.25

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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.