Home / 18,958.70-28,453.52-13,417.38

Finding the Fourth Proportional to 18,958.70, 28,453.52 and 13,417.38

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Solution

The fourth proportional to 18,958.70, 28,453.52 and 13,417.38 is: 20,137.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,958.70 : 28,453.52 = 13,417.38 : x
  2. Step 2: Convert to fraction form
    18,958.70/28,453.52 = 13,417.38/x
  3. Step 3: Cross multiply
    18,958.70x = 28,453.52 × 13,417.38
  4. Step 4: Simplify right side
    18,958.70x = 381,771,690.18
  5. Step 5: Solve for x
    x = 381,771,690.18/18,958.70
  6. Step 6: Final answer
    x = 20,137.02

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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.