Home / 13,810.92-20,719.08-5,489.38

Finding the Fourth Proportional to 13,810.92, 20,719.08 and 5,489.38

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Solution

The fourth proportional to 13,810.92, 20,719.08 and 5,489.38 is: 8,235.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.92 : 20,719.08 = 5,489.38 : x
  2. Step 2: Convert to fraction form
    13,810.92/20,719.08 = 5,489.38/x
  3. Step 3: Cross multiply
    13,810.92x = 20,719.08 × 5,489.38
  4. Step 4: Simplify right side
    13,810.92x = 113,734,903.37
  5. Step 5: Solve for x
    x = 113,734,903.37/13,810.92
  6. Step 6: Final answer
    x = 8,235.14

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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.