Home / 13,666.24-20,499.54-3,805.28

Finding the Fourth Proportional to 13,666.24, 20,499.54 and 3,805.28

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Solution

The fourth proportional to 13,666.24, 20,499.54 and 3,805.28 is: 5,707.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.24 : 20,499.54 = 3,805.28 : x
  2. Step 2: Convert to fraction form
    13,666.24/20,499.54 = 3,805.28/x
  3. Step 3: Cross multiply
    13,666.24x = 20,499.54 × 3,805.28
  4. Step 4: Simplify right side
    13,666.24x = 78,006,489.57
  5. Step 5: Solve for x
    x = 78,006,489.57/13,666.24
  6. Step 6: Final answer
    x = 5,707.97

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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.