Home / 30,579.21-45,873.38-10,856.12

Finding the Fourth Proportional to 30,579.21, 45,873.38 and 10,856.12

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Solution

The fourth proportional to 30,579.21, 45,873.38 and 10,856.12 is: 16,285.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.21 : 45,873.38 = 10,856.12 : x
  2. Step 2: Convert to fraction form
    30,579.21/45,873.38 = 10,856.12/x
  3. Step 3: Cross multiply
    30,579.21x = 45,873.38 × 10,856.12
  4. Step 4: Simplify right side
    30,579.21x = 498,006,634.44
  5. Step 5: Solve for x
    x = 498,006,634.44/30,579.21
  6. Step 6: Final answer
    x = 16,285.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.