Home / 20,243.52-30,369.36-8,556.72

Finding the Fourth Proportional to 20,243.52, 30,369.36 and 8,556.72

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Solution

The fourth proportional to 20,243.52, 30,369.36 and 8,556.72 is: 12,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.52 : 30,369.36 = 8,556.72 : x
  2. Step 2: Convert to fraction form
    20,243.52/30,369.36 = 8,556.72/x
  3. Step 3: Cross multiply
    20,243.52x = 30,369.36 × 8,556.72
  4. Step 4: Simplify right side
    20,243.52x = 259,862,110.10
  5. Step 5: Solve for x
    x = 259,862,110.10/20,243.52
  6. Step 6: Final answer
    x = 12,836.80

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1.5x scale

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.