Home / 13,128.99-19,687.56-3,766.88

Finding the Fourth Proportional to 13,128.99, 19,687.56 and 3,766.88

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Solution

The fourth proportional to 13,128.99, 19,687.56 and 3,766.88 is: 5,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.99 : 19,687.56 = 3,766.88 : x
  2. Step 2: Convert to fraction form
    13,128.99/19,687.56 = 3,766.88/x
  3. Step 3: Cross multiply
    13,128.99x = 19,687.56 × 3,766.88
  4. Step 4: Simplify right side
    13,128.99x = 74,160,676.01
  5. Step 5: Solve for x
    x = 74,160,676.01/13,128.99
  6. Step 6: Final answer
    x = 5,648.62

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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.