Home / 13,425.69-20,145.78-7,889.85

Finding the Fourth Proportional to 13,425.69, 20,145.78 and 7,889.85

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Solution

The fourth proportional to 13,425.69, 20,145.78 and 7,889.85 is: 11,839.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.69 : 20,145.78 = 7,889.85 : x
  2. Step 2: Convert to fraction form
    13,425.69/20,145.78 = 7,889.85/x
  3. Step 3: Cross multiply
    13,425.69x = 20,145.78 × 7,889.85
  4. Step 4: Simplify right side
    13,425.69x = 158,947,182.33
  5. Step 5: Solve for x
    x = 158,947,182.33/13,425.69
  6. Step 6: Final answer
    x = 11,839.03

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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.