Home / 20,809,637.20-31,214,455.80-19,959,331.60

Finding the Fourth Proportional to 20,809,637.20, 31,214,455.80 and 19,959,331.60

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Solution

The fourth proportional to 20,809,637.20, 31,214,455.80 and 19,959,331.60 is: 29,938,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,637.20 : 31,214,455.80 = 19,959,331.60 : x
  2. Step 2: Convert to fraction form
    20,809,637.20/31,214,455.80 = 19,959,331.60/x
  3. Step 3: Cross multiply
    20,809,637.20x = 31,214,455.80 × 19,959,331.60
  4. Step 4: Simplify right side
    20,809,637.20x = 623,019,674,025,743.38
  5. Step 5: Solve for x
    x = 623,019,674,025,743.38/20,809,637.20
  6. Step 6: Final answer
    x = 29,938,997.40

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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.