Home / 20,673.90-28,531.17-11,719.89

Finding the Fourth Proportional to 20,673.90, 28,531.17 and 11,719.89

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Solution

The fourth proportional to 20,673.90, 28,531.17 and 11,719.89 is: 16,174.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.90 : 28,531.17 = 11,719.89 : x
  2. Step 2: Convert to fraction form
    20,673.90/28,531.17 = 11,719.89/x
  3. Step 3: Cross multiply
    20,673.90x = 28,531.17 × 11,719.89
  4. Step 4: Simplify right side
    20,673.90x = 334,382,173.97
  5. Step 5: Solve for x
    x = 334,382,173.97/20,673.90
  6. Step 6: Final answer
    x = 16,174.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.