Home / 17,678.07-26,513.85-7,145.35

Finding the Fourth Proportional to 17,678.07, 26,513.85 and 7,145.35

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Solution

The fourth proportional to 17,678.07, 26,513.85 and 7,145.35 is: 10,716.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,678.07 : 26,513.85 = 7,145.35 : x
  2. Step 2: Convert to fraction form
    17,678.07/26,513.85 = 7,145.35/x
  3. Step 3: Cross multiply
    17,678.07x = 26,513.85 × 7,145.35
  4. Step 4: Simplify right side
    17,678.07x = 189,450,738.10
  5. Step 5: Solve for x
    x = 189,450,738.10/17,678.07
  6. Step 6: Final answer
    x = 10,716.71

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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.