Home / 18,399.25-25,390.97-10,015.75

Finding the Fourth Proportional to 18,399.25, 25,390.97 and 10,015.75

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Solution

The fourth proportional to 18,399.25, 25,390.97 and 10,015.75 is: 13,821.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.25 : 25,390.97 = 10,015.75 : x
  2. Step 2: Convert to fraction form
    18,399.25/25,390.97 = 10,015.75/x
  3. Step 3: Cross multiply
    18,399.25x = 25,390.97 × 10,015.75
  4. Step 4: Simplify right side
    18,399.25x = 254,309,607.78
  5. Step 5: Solve for x
    x = 254,309,607.78/18,399.25
  6. Step 6: Final answer
    x = 13,821.74

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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.