Home / 18,216.36-25,085.64-15,825.24

Finding the Fourth Proportional to 18,216.36, 25,085.64 and 15,825.24

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Solution

The fourth proportional to 18,216.36, 25,085.64 and 15,825.24 is: 21,792.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.36 : 25,085.64 = 15,825.24 : x
  2. Step 2: Convert to fraction form
    18,216.36/25,085.64 = 15,825.24/x
  3. Step 3: Cross multiply
    18,216.36x = 25,085.64 × 15,825.24
  4. Step 4: Simplify right side
    18,216.36x = 396,986,273.55
  5. Step 5: Solve for x
    x = 396,986,273.55/18,216.36
  6. Step 6: Final answer
    x = 21,792.84

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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.