Home / 20,420,215.80-28,179,532.86-11,127,866.60

Finding the Fourth Proportional to 20,420,215.80, 28,179,532.86 and 11,127,866.60

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Solution

The fourth proportional to 20,420,215.80, 28,179,532.86 and 11,127,866.60 is: 15,356,257.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420,215.80 : 28,179,532.86 = 11,127,866.60 : x
  2. Step 2: Convert to fraction form
    20,420,215.80/28,179,532.86 = 11,127,866.60/x
  3. Step 3: Cross multiply
    20,420,215.80x = 28,179,532.86 × 11,127,866.60
  4. Step 4: Simplify right side
    20,420,215.80x = 313,578,082,516,396.44
  5. Step 5: Solve for x
    x = 313,578,082,516,396.44/20,420,215.80
  6. Step 6: Final answer
    x = 15,356,257.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.