Home / 12,158,220.90-18,234,998.55-3,638,835.30

Finding the Fourth Proportional to 12,158,220.90, 18,234,998.55 and 3,638,835.30

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Solution

The fourth proportional to 12,158,220.90, 18,234,998.55 and 3,638,835.30 is: 5,457,554.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158,220.90 : 18,234,998.55 = 3,638,835.30 : x
  2. Step 2: Convert to fraction form
    12,158,220.90/18,234,998.55 = 3,638,835.30/x
  3. Step 3: Cross multiply
    12,158,220.90x = 18,234,998.55 × 3,638,835.30
  4. Step 4: Simplify right side
    12,158,220.90x = 66,354,156,419,188.81
  5. Step 5: Solve for x
    x = 66,354,156,419,188.81/12,158,220.90
  6. Step 6: Final answer
    x = 5,457,554.77

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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.