Home / 18,715.75-25,825.28-11,162.97

Finding the Fourth Proportional to 18,715.75, 25,825.28 and 11,162.97

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Solution

The fourth proportional to 18,715.75, 25,825.28 and 11,162.97 is: 15,403.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.75 : 25,825.28 = 11,162.97 : x
  2. Step 2: Convert to fraction form
    18,715.75/25,825.28 = 11,162.97/x
  3. Step 3: Cross multiply
    18,715.75x = 25,825.28 × 11,162.97
  4. Step 4: Simplify right side
    18,715.75x = 288,286,770.07
  5. Step 5: Solve for x
    x = 288,286,770.07/18,715.75
  6. Step 6: Final answer
    x = 15,403.43

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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.