Home / 20,699.88-31,046.34-5,905.43

Finding the Fourth Proportional to 20,699.88, 31,046.34 and 5,905.43

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Solution

The fourth proportional to 20,699.88, 31,046.34 and 5,905.43 is: 8,857.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.88 : 31,046.34 = 5,905.43 : x
  2. Step 2: Convert to fraction form
    20,699.88/31,046.34 = 5,905.43/x
  3. Step 3: Cross multiply
    20,699.88x = 31,046.34 × 5,905.43
  4. Step 4: Simplify right side
    20,699.88x = 183,341,987.63
  5. Step 5: Solve for x
    x = 183,341,987.63/20,699.88
  6. Step 6: Final answer
    x = 8,857.15

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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.