Home / 13,689.24-20,535.16-3,828.52

Finding the Fourth Proportional to 13,689.24, 20,535.16 and 3,828.52

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Solution

The fourth proportional to 13,689.24, 20,535.16 and 3,828.52 is: 5,743.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.24 : 20,535.16 = 3,828.52 : x
  2. Step 2: Convert to fraction form
    13,689.24/20,535.16 = 3,828.52/x
  3. Step 3: Cross multiply
    13,689.24x = 20,535.16 × 3,828.52
  4. Step 4: Simplify right side
    13,689.24x = 78,619,270.76
  5. Step 5: Solve for x
    x = 78,619,270.76/13,689.24
  6. Step 6: Final answer
    x = 5,743.14

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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.