Home / 12,889.24-17,786.90-7,512.68

Finding the Fourth Proportional to 12,889.24, 17,786.90 and 7,512.68

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Solution

The fourth proportional to 12,889.24, 17,786.90 and 7,512.68 is: 10,367.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.24 : 17,786.90 = 7,512.68 : x
  2. Step 2: Convert to fraction form
    12,889.24/17,786.90 = 7,512.68/x
  3. Step 3: Cross multiply
    12,889.24x = 17,786.90 × 7,512.68
  4. Step 4: Simplify right side
    12,889.24x = 133,627,287.89
  5. Step 5: Solve for x
    x = 133,627,287.89/12,889.24
  6. Step 6: Final answer
    x = 10,367.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.