Home / 15,222.26-21,013.20-9,255.85

Finding the Fourth Proportional to 15,222.26, 21,013.20 and 9,255.85

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Solution

The fourth proportional to 15,222.26, 21,013.20 and 9,255.85 is: 12,777.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.26 : 21,013.20 = 9,255.85 : x
  2. Step 2: Convert to fraction form
    15,222.26/21,013.20 = 9,255.85/x
  3. Step 3: Cross multiply
    15,222.26x = 21,013.20 × 9,255.85
  4. Step 4: Simplify right side
    15,222.26x = 194,494,974.69
  5. Step 5: Solve for x
    x = 194,494,974.69/15,222.26
  6. Step 6: Final answer
    x = 12,777.01

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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.