Home / 30,824.12-42,514.40-18,724.54

Finding the Fourth Proportional to 30,824.12, 42,514.40 and 18,724.54

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Solution

The fourth proportional to 30,824.12, 42,514.40 and 18,724.54 is: 25,825.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,824.12 : 42,514.40 = 18,724.54 : x
  2. Step 2: Convert to fraction form
    30,824.12/42,514.40 = 18,724.54/x
  3. Step 3: Cross multiply
    30,824.12x = 42,514.40 × 18,724.54
  4. Step 4: Simplify right side
    30,824.12x = 796,062,583.38
  5. Step 5: Solve for x
    x = 796,062,583.38/30,824.12
  6. Step 6: Final answer
    x = 25,825.96

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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.