Home / 31,687.08-43,728-17,539.88

Finding the Fourth Proportional to 31,687.08, 43,728 and 17,539.88

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Solution

The fourth proportional to 31,687.08, 43,728 and 17,539.88 is: 24,204.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.08 : 43,728 = 17,539.88 : x
  2. Step 2: Convert to fraction form
    31,687.08/43,728 = 17,539.88/x
  3. Step 3: Cross multiply
    31,687.08x = 43,728 × 17,539.88
  4. Step 4: Simplify right side
    31,687.08x = 766,983,872.64
  5. Step 5: Solve for x
    x = 766,983,872.64/31,687.08
  6. Step 6: Final answer
    x = 24,204.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.