Home / 18,518.47-27,745.30-15,418.39

Finding the Fourth Proportional to 18,518.47, 27,745.30 and 15,418.39

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Solution

The fourth proportional to 18,518.47, 27,745.30 and 15,418.39 is: 23,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.47 : 27,745.30 = 15,418.39 : x
  2. Step 2: Convert to fraction form
    18,518.47/27,745.30 = 15,418.39/x
  3. Step 3: Cross multiply
    18,518.47x = 27,745.30 × 15,418.39
  4. Step 4: Simplify right side
    18,518.47x = 427,787,856.07
  5. Step 5: Solve for x
    x = 427,787,856.07/18,518.47
  6. Step 6: Final answer
    x = 23,100.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.