Home / 18,956.70-28,450.52-13,415.38

Finding the Fourth Proportional to 18,956.70, 28,450.52 and 13,415.38

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Solution

The fourth proportional to 18,956.70, 28,450.52 and 13,415.38 is: 20,134.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956.70 : 28,450.52 = 13,415.38 : x
  2. Step 2: Convert to fraction form
    18,956.70/28,450.52 = 13,415.38/x
  3. Step 3: Cross multiply
    18,956.70x = 28,450.52 × 13,415.38
  4. Step 4: Simplify right side
    18,956.70x = 381,674,537.00
  5. Step 5: Solve for x
    x = 381,674,537.00/18,956.70
  6. Step 6: Final answer
    x = 20,134.02

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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.