Home / 20,556.51-30,816.32-8,085.49

Finding the Fourth Proportional to 20,556.51, 30,816.32 and 8,085.49

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Solution

The fourth proportional to 20,556.51, 30,816.32 and 8,085.49 is: 12,120.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.51 : 30,816.32 = 8,085.49 : x
  2. Step 2: Convert to fraction form
    20,556.51/30,816.32 = 8,085.49/x
  3. Step 3: Cross multiply
    20,556.51x = 30,816.32 × 8,085.49
  4. Step 4: Simplify right side
    20,556.51x = 249,164,929.73
  5. Step 5: Solve for x
    x = 249,164,929.73/20,556.51
  6. Step 6: Final answer
    x = 12,120.97

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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.