Home / 18,519.56-25,556.79-10,021.49

Finding the Fourth Proportional to 18,519.56, 25,556.79 and 10,021.49

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Solution

The fourth proportional to 18,519.56, 25,556.79 and 10,021.49 is: 13,829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.56 : 25,556.79 = 10,021.49 : x
  2. Step 2: Convert to fraction form
    18,519.56/25,556.79 = 10,021.49/x
  3. Step 3: Cross multiply
    18,519.56x = 25,556.79 × 10,021.49
  4. Step 4: Simplify right side
    18,519.56x = 256,117,216.89
  5. Step 5: Solve for x
    x = 256,117,216.89/18,519.56
  6. Step 6: Final answer
    x = 13,829.55

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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.