Home / 13,121.64-19,679.10-3,885.48

Finding the Fourth Proportional to 13,121.64, 19,679.10 and 3,885.48

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Solution

The fourth proportional to 13,121.64, 19,679.10 and 3,885.48 is: 5,827.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.64 : 19,679.10 = 3,885.48 : x
  2. Step 2: Convert to fraction form
    13,121.64/19,679.10 = 3,885.48/x
  3. Step 3: Cross multiply
    13,121.64x = 19,679.10 × 3,885.48
  4. Step 4: Simplify right side
    13,121.64x = 76,462,749.47
  5. Step 5: Solve for x
    x = 76,462,749.47/13,121.64
  6. Step 6: Final answer
    x = 5,827.23

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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.