Home / 20,643,820.80-30,964,747.05-6,995,628.60

Finding the Fourth Proportional to 20,643,820.80, 30,964,747.05 and 6,995,628.60

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Solution

The fourth proportional to 20,643,820.80, 30,964,747.05 and 6,995,628.60 is: 10,493,109.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643,820.80 : 30,964,747.05 = 6,995,628.60 : x
  2. Step 2: Convert to fraction form
    20,643,820.80/30,964,747.05 = 6,995,628.60/x
  3. Step 3: Cross multiply
    20,643,820.80x = 30,964,747.05 × 6,995,628.60
  4. Step 4: Simplify right side
    20,643,820.80x = 216,617,870,054,745.62
  5. Step 5: Solve for x
    x = 216,617,870,054,745.62/20,643,820.80
  6. Step 6: Final answer
    x = 10,493,109.40

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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.