Home / 21,745.07-30,007.35-12,313.65

Finding the Fourth Proportional to 21,745.07, 30,007.35 and 12,313.65

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Solution

The fourth proportional to 21,745.07, 30,007.35 and 12,313.65 is: 16,992.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,745.07 : 30,007.35 = 12,313.65 : x
  2. Step 2: Convert to fraction form
    21,745.07/30,007.35 = 12,313.65/x
  3. Step 3: Cross multiply
    21,745.07x = 30,007.35 × 12,313.65
  4. Step 4: Simplify right side
    21,745.07x = 369,500,005.33
  5. Step 5: Solve for x
    x = 369,500,005.33/21,745.07
  6. Step 6: Final answer
    x = 16,992.36

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1.5x scale

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.