Home / 13,128.41-19,686.70-3,766.31

Finding the Fourth Proportional to 13,128.41, 19,686.70 and 3,766.31

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Solution

The fourth proportional to 13,128.41, 19,686.70 and 3,766.31 is: 5,647.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.41 : 19,686.70 = 3,766.31 : x
  2. Step 2: Convert to fraction form
    13,128.41/19,686.70 = 3,766.31/x
  3. Step 3: Cross multiply
    13,128.41x = 19,686.70 × 3,766.31
  4. Step 4: Simplify right side
    13,128.41x = 74,146,118.62
  5. Step 5: Solve for x
    x = 74,146,118.62/13,128.41
  6. Step 6: Final answer
    x = 5,647.76

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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.