Home / 18,728,330.40-28,101,826.80-10,647,511.20

Finding the Fourth Proportional to 18,728,330.40, 28,101,826.80 and 10,647,511.20

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Solution

The fourth proportional to 18,728,330.40, 28,101,826.80 and 10,647,511.20 is: 15,976,571.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728,330.40 : 28,101,826.80 = 10,647,511.20 : x
  2. Step 2: Convert to fraction form
    18,728,330.40/28,101,826.80 = 10,647,511.20/x
  3. Step 3: Cross multiply
    18,728,330.40x = 28,101,826.80 × 10,647,511.20
  4. Step 4: Simplify right side
    18,728,330.40x = 299,214,515,593,460.12
  5. Step 5: Solve for x
    x = 299,214,515,593,460.12/18,728,330.40
  6. Step 6: Final answer
    x = 15,976,571.81

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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.