Home / 20,946.31-28,905.17-11,514.80

Finding the Fourth Proportional to 20,946.31, 28,905.17 and 11,514.80

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Solution

The fourth proportional to 20,946.31, 28,905.17 and 11,514.80 is: 15,890.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.31 : 28,905.17 = 11,514.80 : x
  2. Step 2: Convert to fraction form
    20,946.31/28,905.17 = 11,514.80/x
  3. Step 3: Cross multiply
    20,946.31x = 28,905.17 × 11,514.80
  4. Step 4: Simplify right side
    20,946.31x = 332,837,403.09
  5. Step 5: Solve for x
    x = 332,837,403.09/20,946.31
  6. Step 6: Final answer
    x = 15,890.03

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1.5x scale

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.