Home / 20,839,143.70-31,238,540.47-9,318,093.31

Finding the Fourth Proportional to 20,839,143.70, 31,238,540.47 and 9,318,093.31

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Solution

The fourth proportional to 20,839,143.70, 31,238,540.47 and 9,318,093.31 is: 13,968,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839,143.70 : 31,238,540.47 = 9,318,093.31 : x
  2. Step 2: Convert to fraction form
    20,839,143.70/31,238,540.47 = 9,318,093.31/x
  3. Step 3: Cross multiply
    20,839,143.70x = 31,238,540.47 × 9,318,093.31
  4. Step 4: Simplify right side
    20,839,143.70x = 291,083,634,967,671.25
  5. Step 5: Solve for x
    x = 291,083,634,967,671.25/20,839,143.70
  6. Step 6: Final answer
    x = 13,968,118.80

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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.