Home / 20,663.41-28,514.95-11,711.75

Finding the Fourth Proportional to 20,663.41, 28,514.95 and 11,711.75

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Solution

The fourth proportional to 20,663.41, 28,514.95 and 11,711.75 is: 16,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.41 : 28,514.95 = 11,711.75 : x
  2. Step 2: Convert to fraction form
    20,663.41/28,514.95 = 11,711.75/x
  3. Step 3: Cross multiply
    20,663.41x = 28,514.95 × 11,711.75
  4. Step 4: Simplify right side
    20,663.41x = 333,959,965.66
  5. Step 5: Solve for x
    x = 333,959,965.66/20,663.41
  6. Step 6: Final answer
    x = 16,161.90

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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.