Home / 12,387,820.40-18,581,730.60-3,291,321.96

Finding the Fourth Proportional to 12,387,820.40, 18,581,730.60 and 3,291,321.96

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Solution

The fourth proportional to 12,387,820.40, 18,581,730.60 and 3,291,321.96 is: 4,936,982.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387,820.40 : 18,581,730.60 = 3,291,321.96 : x
  2. Step 2: Convert to fraction form
    12,387,820.40/18,581,730.60 = 3,291,321.96/x
  3. Step 3: Cross multiply
    12,387,820.40x = 18,581,730.60 × 3,291,321.96
  4. Step 4: Simplify right side
    12,387,820.40x = 61,158,457,978,583.98
  5. Step 5: Solve for x
    x = 61,158,457,978,583.98/12,387,820.40
  6. Step 6: Final answer
    x = 4,936,982.94

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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.