Home / 20,511,743.40-30,772,280.70-11,987,692.20

Finding the Fourth Proportional to 20,511,743.40, 30,772,280.70 and 11,987,692.20

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Solution

The fourth proportional to 20,511,743.40, 30,772,280.70 and 11,987,692.20 is: 17,984,265.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511,743.40 : 30,772,280.70 = 11,987,692.20 : x
  2. Step 2: Convert to fraction form
    20,511,743.40/30,772,280.70 = 11,987,692.20/x
  3. Step 3: Cross multiply
    20,511,743.40x = 30,772,280.70 × 11,987,692.20
  4. Step 4: Simplify right side
    20,511,743.40x = 368,888,629,323,600.50
  5. Step 5: Solve for x
    x = 368,888,629,323,600.50/20,511,743.40
  6. Step 6: Final answer
    x = 17,984,265.02

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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.