Home / 13,391.30-20,086.85-4,031.28

Finding the Fourth Proportional to 13,391.30, 20,086.85 and 4,031.28

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Solution

The fourth proportional to 13,391.30, 20,086.85 and 4,031.28 is: 6,046.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.30 : 20,086.85 = 4,031.28 : x
  2. Step 2: Convert to fraction form
    13,391.30/20,086.85 = 4,031.28/x
  3. Step 3: Cross multiply
    13,391.30x = 20,086.85 × 4,031.28
  4. Step 4: Simplify right side
    13,391.30x = 80,975,696.51
  5. Step 5: Solve for x
    x = 80,975,696.51/13,391.30
  6. Step 6: Final answer
    x = 6,046.89

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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.