Home / 20,753,893.20-31,130,839.80-20,435,028.60

Finding the Fourth Proportional to 20,753,893.20, 31,130,839.80 and 20,435,028.60

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Solution

The fourth proportional to 20,753,893.20, 31,130,839.80 and 20,435,028.60 is: 30,652,542.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753,893.20 : 31,130,839.80 = 20,435,028.60 : x
  2. Step 2: Convert to fraction form
    20,753,893.20/31,130,839.80 = 20,435,028.60/x
  3. Step 3: Cross multiply
    20,753,893.20x = 31,130,839.80 × 20,435,028.60
  4. Step 4: Simplify right side
    20,753,893.20x = 636,159,601,655,018.38
  5. Step 5: Solve for x
    x = 636,159,601,655,018.38/20,753,893.20
  6. Step 6: Final answer
    x = 30,652,542.90

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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.