Home / 13,866.38-19,135.78-7,578.89

Finding the Fourth Proportional to 13,866.38, 19,135.78 and 7,578.89

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Solution

The fourth proportional to 13,866.38, 19,135.78 and 7,578.89 is: 10,458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.38 : 19,135.78 = 7,578.89 : x
  2. Step 2: Convert to fraction form
    13,866.38/19,135.78 = 7,578.89/x
  3. Step 3: Cross multiply
    13,866.38x = 19,135.78 × 7,578.89
  4. Step 4: Simplify right side
    13,866.38x = 145,027,857.06
  5. Step 5: Solve for x
    x = 145,027,857.06/13,866.38
  6. Step 6: Final answer
    x = 10,458.96

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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.