Home / 12,255.15-16,907.21-8,004.76

Finding the Fourth Proportional to 12,255.15, 16,907.21 and 8,004.76

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Solution

The fourth proportional to 12,255.15, 16,907.21 and 8,004.76 is: 11,043.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.15 : 16,907.21 = 8,004.76 : x
  2. Step 2: Convert to fraction form
    12,255.15/16,907.21 = 8,004.76/x
  3. Step 3: Cross multiply
    12,255.15x = 16,907.21 × 8,004.76
  4. Step 4: Simplify right side
    12,255.15x = 135,338,118.30
  5. Step 5: Solve for x
    x = 135,338,118.30/12,255.15
  6. Step 6: Final answer
    x = 11,043.37

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Half scale
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Double scale
Find fourth proportional to 12,256.15, 16,908.58 and 8,005.76
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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.