Home / 18,198.95-25,103.59-11,113.07

Finding the Fourth Proportional to 18,198.95, 25,103.59 and 11,113.07

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Solution

The fourth proportional to 18,198.95, 25,103.59 and 11,113.07 is: 15,329.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.95 : 25,103.59 = 11,113.07 : x
  2. Step 2: Convert to fraction form
    18,198.95/25,103.59 = 11,113.07/x
  3. Step 3: Cross multiply
    18,198.95x = 25,103.59 × 11,113.07
  4. Step 4: Simplify right side
    18,198.95x = 278,977,799.62
  5. Step 5: Solve for x
    x = 278,977,799.62/18,198.95
  6. Step 6: Final answer
    x = 15,329.34

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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.