Home / 13,948-19,250.72-7,979.92

Finding the Fourth Proportional to 13,948, 19,250.72 and 7,979.92

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Solution

The fourth proportional to 13,948, 19,250.72 and 7,979.92 is: 11,013.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,948 : 19,250.72 = 7,979.92 : x
  2. Step 2: Convert to fraction form
    13,948/19,250.72 = 7,979.92/x
  3. Step 3: Cross multiply
    13,948x = 19,250.72 × 7,979.92
  4. Step 4: Simplify right side
    13,948x = 153,619,205.54
  5. Step 5: Solve for x
    x = 153,619,205.54/13,948
  6. Step 6: Final answer
    x = 11,013.71

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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.