Home / 13,856.25-20,784.38-5,539.98

Finding the Fourth Proportional to 13,856.25, 20,784.38 and 5,539.98

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Solution

The fourth proportional to 13,856.25, 20,784.38 and 5,539.98 is: 8,309.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.25 : 20,784.38 = 5,539.98 : x
  2. Step 2: Convert to fraction form
    13,856.25/20,784.38 = 5,539.98/x
  3. Step 3: Cross multiply
    13,856.25x = 20,784.38 × 5,539.98
  4. Step 4: Simplify right side
    13,856.25x = 115,145,021.81
  5. Step 5: Solve for x
    x = 115,145,021.81/13,856.25
  6. Step 6: Final answer
    x = 8,309.97

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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.