Home / 20,760.54-31,140.05-11,404.94

Finding the Fourth Proportional to 20,760.54, 31,140.05 and 11,404.94

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Solution

The fourth proportional to 20,760.54, 31,140.05 and 11,404.94 is: 17,106.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.54 : 31,140.05 = 11,404.94 : x
  2. Step 2: Convert to fraction form
    20,760.54/31,140.05 = 11,404.94/x
  3. Step 3: Cross multiply
    20,760.54x = 31,140.05 × 11,404.94
  4. Step 4: Simplify right side
    20,760.54x = 355,150,189.12
  5. Step 5: Solve for x
    x = 355,150,189.12/20,760.54
  6. Step 6: Final answer
    x = 17,106.99

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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.