Home / 20,855,434.20-31,283,151.30-20,005,128.60

Finding the Fourth Proportional to 20,855,434.20, 31,283,151.30 and 20,005,128.60

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Solution

The fourth proportional to 20,855,434.20, 31,283,151.30 and 20,005,128.60 is: 30,007,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855,434.20 : 31,283,151.30 = 20,005,128.60 : x
  2. Step 2: Convert to fraction form
    20,855,434.20/31,283,151.30 = 20,005,128.60/x
  3. Step 3: Cross multiply
    20,855,434.20x = 31,283,151.30 × 20,005,128.60
  4. Step 4: Simplify right side
    20,855,434.20x = 625,823,464,769,757.25
  5. Step 5: Solve for x
    x = 625,823,464,769,757.25/20,855,434.20
  6. Step 6: Final answer
    x = 30,007,692.90

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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.