Home / 15,222.20-21,005.98-8,323.24

Finding the Fourth Proportional to 15,222.20, 21,005.98 and 8,323.24

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Solution

The fourth proportional to 15,222.20, 21,005.98 and 8,323.24 is: 11,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.20 : 21,005.98 = 8,323.24 : x
  2. Step 2: Convert to fraction form
    15,222.20/21,005.98 = 8,323.24/x
  3. Step 3: Cross multiply
    15,222.20x = 21,005.98 × 8,323.24
  4. Step 4: Simplify right side
    15,222.20x = 174,837,745.10
  5. Step 5: Solve for x
    x = 174,837,745.10/15,222.20
  6. Step 6: Final answer
    x = 11,485.71

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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.