Home / 30,481.64-42,065.86-17,906.28

Finding the Fourth Proportional to 30,481.64, 42,065.86 and 17,906.28

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Solution

The fourth proportional to 30,481.64, 42,065.86 and 17,906.28 is: 24,711.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,481.64 : 42,065.86 = 17,906.28 : x
  2. Step 2: Convert to fraction form
    30,481.64/42,065.86 = 17,906.28/x
  3. Step 3: Cross multiply
    30,481.64x = 42,065.86 × 17,906.28
  4. Step 4: Simplify right side
    30,481.64x = 753,243,067.60
  5. Step 5: Solve for x
    x = 753,243,067.60/30,481.64
  6. Step 6: Final answer
    x = 24,711.37

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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.