Home / 20,765,208.80-31,133,067.60-7,980,773.60

Finding the Fourth Proportional to 20,765,208.80, 31,133,067.60 and 7,980,773.60

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Solution

The fourth proportional to 20,765,208.80, 31,133,067.60 and 7,980,773.60 is: 11,965,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765,208.80 : 31,133,067.60 = 7,980,773.60 : x
  2. Step 2: Convert to fraction form
    20,765,208.80/31,133,067.60 = 7,980,773.60/x
  3. Step 3: Cross multiply
    20,765,208.80x = 31,133,067.60 × 7,980,773.60
  4. Step 4: Simplify right side
    20,765,208.80x = 248,465,963,989,095.38
  5. Step 5: Solve for x
    x = 248,465,963,989,095.38/20,765,208.80
  6. Step 6: Final answer
    x = 11,965,493.17

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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.