Home / 51,309.84-76,957.32-13,872.09

Finding the Fourth Proportional to 51,309.84, 76,957.32 and 13,872.09

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Solution

The fourth proportional to 51,309.84, 76,957.32 and 13,872.09 is: 20,806.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,309.84 : 76,957.32 = 13,872.09 : x
  2. Step 2: Convert to fraction form
    51,309.84/76,957.32 = 13,872.09/x
  3. Step 3: Cross multiply
    51,309.84x = 76,957.32 × 13,872.09
  4. Step 4: Simplify right side
    51,309.84x = 1,067,558,869.20
  5. Step 5: Solve for x
    x = 1,067,558,869.20/51,309.84
  6. Step 6: Final answer
    x = 20,806.12

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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.