Home / 11,692.78-16,135.92-6,387.60

Finding the Fourth Proportional to 11,692.78, 16,135.92 and 6,387.60

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Solution

The fourth proportional to 11,692.78, 16,135.92 and 6,387.60 is: 8,814.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,692.78 : 16,135.92 = 6,387.60 : x
  2. Step 2: Convert to fraction form
    11,692.78/16,135.92 = 6,387.60/x
  3. Step 3: Cross multiply
    11,692.78x = 16,135.92 × 6,387.60
  4. Step 4: Simplify right side
    11,692.78x = 103,069,802.59
  5. Step 5: Solve for x
    x = 103,069,802.59/11,692.78
  6. Step 6: Final answer
    x = 8,814.82

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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.