Home / 19,331,231.80-28,996,847.70-12,961,132.60

Finding the Fourth Proportional to 19,331,231.80, 28,996,847.70 and 12,961,132.60

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Solution

The fourth proportional to 19,331,231.80, 28,996,847.70 and 12,961,132.60 is: 19,441,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331,231.80 : 28,996,847.70 = 12,961,132.60 : x
  2. Step 2: Convert to fraction form
    19,331,231.80/28,996,847.70 = 12,961,132.60/x
  3. Step 3: Cross multiply
    19,331,231.80x = 28,996,847.70 × 12,961,132.60
  4. Step 4: Simplify right side
    19,331,231.80x = 375,831,988,021,705
  5. Step 5: Solve for x
    x = 375,831,988,021,705/19,331,231.80
  6. Step 6: Final answer
    x = 19,441,698.90

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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.