Home / 20,770,489.80-31,161,493.80-8,645,664.60

Finding the Fourth Proportional to 20,770,489.80, 31,161,493.80 and 8,645,664.60

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Solution

The fourth proportional to 20,770,489.80, 31,161,493.80 and 8,645,664.60 is: 12,970,894.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770,489.80 : 31,161,493.80 = 8,645,664.60 : x
  2. Step 2: Convert to fraction form
    20,770,489.80/31,161,493.80 = 8,645,664.60/x
  3. Step 3: Cross multiply
    20,770,489.80x = 31,161,493.80 × 8,645,664.60
  4. Step 4: Simplify right side
    20,770,489.80x = 269,411,823,829,779.47
  5. Step 5: Solve for x
    x = 269,411,823,829,779.47/20,770,489.80
  6. Step 6: Final answer
    x = 12,970,894.11

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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.