Home / 20,209.85-30,324.39-9,119.93

Finding the Fourth Proportional to 20,209.85, 30,324.39 and 9,119.93

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Solution

The fourth proportional to 20,209.85, 30,324.39 and 9,119.93 is: 13,684.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.85 : 30,324.39 = 9,119.93 : x
  2. Step 2: Convert to fraction form
    20,209.85/30,324.39 = 9,119.93/x
  3. Step 3: Cross multiply
    20,209.85x = 30,324.39 × 9,119.93
  4. Step 4: Simplify right side
    20,209.85x = 276,556,389.90
  5. Step 5: Solve for x
    x = 276,556,389.90/20,209.85
  6. Step 6: Final answer
    x = 13,684.24

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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.