Home / 18,886.15-28,290.34-11,076.13

Finding the Fourth Proportional to 18,886.15, 28,290.34 and 11,076.13

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Solution

The fourth proportional to 18,886.15, 28,290.34 and 11,076.13 is: 16,591.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.15 : 28,290.34 = 11,076.13 : x
  2. Step 2: Convert to fraction form
    18,886.15/28,290.34 = 11,076.13/x
  3. Step 3: Cross multiply
    18,886.15x = 28,290.34 × 11,076.13
  4. Step 4: Simplify right side
    18,886.15x = 313,347,483.58
  5. Step 5: Solve for x
    x = 313,347,483.58/18,886.15
  6. Step 6: Final answer
    x = 16,591.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.