Home / 18,419.07-25,391.55-12,745.17

Finding the Fourth Proportional to 18,419.07, 25,391.55 and 12,745.17

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Solution

The fourth proportional to 18,419.07, 25,391.55 and 12,745.17 is: 17,569.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.07 : 25,391.55 = 12,745.17 : x
  2. Step 2: Convert to fraction form
    18,419.07/25,391.55 = 12,745.17/x
  3. Step 3: Cross multiply
    18,419.07x = 25,391.55 × 12,745.17
  4. Step 4: Simplify right side
    18,419.07x = 323,619,621.31
  5. Step 5: Solve for x
    x = 323,619,621.31/18,419.07
  6. Step 6: Final answer
    x = 17,569.81

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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.