Home / 28,579.29-42,871.79-9,856.86

Finding the Fourth Proportional to 28,579.29, 42,871.79 and 9,856.86

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Solution

The fourth proportional to 28,579.29, 42,871.79 and 9,856.86 is: 14,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.29 : 42,871.79 = 9,856.86 : x
  2. Step 2: Convert to fraction form
    28,579.29/42,871.79 = 9,856.86/x
  3. Step 3: Cross multiply
    28,579.29x = 42,871.79 × 9,856.86
  4. Step 4: Simplify right side
    28,579.29x = 422,581,231.98
  5. Step 5: Solve for x
    x = 422,581,231.98/28,579.29
  6. Step 6: Final answer
    x = 14,786.27

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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.