Home / 20,841.94-28,761.98-11,889.35

Finding the Fourth Proportional to 20,841.94, 28,761.98 and 11,889.35

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Solution

The fourth proportional to 20,841.94, 28,761.98 and 11,889.35 is: 16,407.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.94 : 28,761.98 = 11,889.35 : x
  2. Step 2: Convert to fraction form
    20,841.94/28,761.98 = 11,889.35/x
  3. Step 3: Cross multiply
    20,841.94x = 28,761.98 × 11,889.35
  4. Step 4: Simplify right side
    20,841.94x = 341,961,246.91
  5. Step 5: Solve for x
    x = 341,961,246.91/20,841.94
  6. Step 6: Final answer
    x = 16,407.36

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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.