Home / 18,399.26-25,390.86-10,015.76

Finding the Fourth Proportional to 18,399.26, 25,390.86 and 10,015.76

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Solution

The fourth proportional to 18,399.26, 25,390.86 and 10,015.76 is: 13,821.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.26 : 25,390.86 = 10,015.76 : x
  2. Step 2: Convert to fraction form
    18,399.26/25,390.86 = 10,015.76/x
  3. Step 3: Cross multiply
    18,399.26x = 25,390.86 × 10,015.76
  4. Step 4: Simplify right side
    18,399.26x = 254,308,759.95
  5. Step 5: Solve for x
    x = 254,308,759.95/18,399.26
  6. Step 6: Final answer
    x = 13,821.68

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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.