Home / 20,841.50-28,764.01-11,886.95

Finding the Fourth Proportional to 20,841.50, 28,764.01 and 11,886.95

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Solution

The fourth proportional to 20,841.50, 28,764.01 and 11,886.95 is: 16,405.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.50 : 28,764.01 = 11,886.95 : x
  2. Step 2: Convert to fraction form
    20,841.50/28,764.01 = 11,886.95/x
  3. Step 3: Cross multiply
    20,841.50x = 28,764.01 × 11,886.95
  4. Step 4: Simplify right side
    20,841.50x = 341,916,435.44
  5. Step 5: Solve for x
    x = 341,916,435.44/20,841.50
  6. Step 6: Final answer
    x = 16,405.56

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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.