Home / 18,939.85-26,137.79-10,556.35

Finding the Fourth Proportional to 18,939.85, 26,137.79 and 10,556.35

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Solution

The fourth proportional to 18,939.85, 26,137.79 and 10,556.35 is: 14,568.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.85 : 26,137.79 = 10,556.35 : x
  2. Step 2: Convert to fraction form
    18,939.85/26,137.79 = 10,556.35/x
  3. Step 3: Cross multiply
    18,939.85x = 26,137.79 × 10,556.35
  4. Step 4: Simplify right side
    18,939.85x = 275,919,620.51
  5. Step 5: Solve for x
    x = 275,919,620.51/18,939.85
  6. Step 6: Final answer
    x = 14,568.21

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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.