Home / 18,518.50-25,556.07-10,135.54

Finding the Fourth Proportional to 18,518.50, 25,556.07 and 10,135.54

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Solution

The fourth proportional to 18,518.50, 25,556.07 and 10,135.54 is: 13,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.50 : 25,556.07 = 10,135.54 : x
  2. Step 2: Convert to fraction form
    18,518.50/25,556.07 = 10,135.54/x
  3. Step 3: Cross multiply
    18,518.50x = 25,556.07 × 10,135.54
  4. Step 4: Simplify right side
    18,518.50x = 259,024,569.73
  5. Step 5: Solve for x
    x = 259,024,569.73/18,518.50
  6. Step 6: Final answer
    x = 13,987.34

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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.