Home / 20,738.69-28,619.40-11,785.96

Finding the Fourth Proportional to 20,738.69, 28,619.40 and 11,785.96

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Solution

The fourth proportional to 20,738.69, 28,619.40 and 11,785.96 is: 16,264.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.69 : 28,619.40 = 11,785.96 : x
  2. Step 2: Convert to fraction form
    20,738.69/28,619.40 = 11,785.96/x
  3. Step 3: Cross multiply
    20,738.69x = 28,619.40 × 11,785.96
  4. Step 4: Simplify right side
    20,738.69x = 337,307,060.48
  5. Step 5: Solve for x
    x = 337,307,060.48/20,738.69
  6. Step 6: Final answer
    x = 16,264.63

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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.