Home / 21,458,768.80-32,181,154.80-7,993,847.20

Finding the Fourth Proportional to 21,458,768.80, 32,181,154.80 and 7,993,847.20

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Solution

The fourth proportional to 21,458,768.80, 32,181,154.80 and 7,993,847.20 is: 11,988,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458,768.80 : 32,181,154.80 = 7,993,847.20 : x
  2. Step 2: Convert to fraction form
    21,458,768.80/32,181,154.80 = 7,993,847.20/x
  3. Step 3: Cross multiply
    21,458,768.80x = 32,181,154.80 × 7,993,847.20
  4. Step 4: Simplify right side
    21,458,768.80x = 257,251,234,190,746.56
  5. Step 5: Solve for x
    x = 257,251,234,190,746.56/21,458,768.80
  6. Step 6: Final answer
    x = 11,988,163.75

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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.