Home / 11,692.12-16,135.48-6,387.20

Finding the Fourth Proportional to 11,692.12, 16,135.48 and 6,387.20

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Solution

The fourth proportional to 11,692.12, 16,135.48 and 6,387.20 is: 8,814.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,692.12 : 16,135.48 = 6,387.20 : x
  2. Step 2: Convert to fraction form
    11,692.12/16,135.48 = 6,387.20/x
  3. Step 3: Cross multiply
    11,692.12x = 16,135.48 × 6,387.20
  4. Step 4: Simplify right side
    11,692.12x = 103,060,537.86
  5. Step 5: Solve for x
    x = 103,060,537.86/11,692.12
  6. Step 6: Final answer
    x = 8,814.53

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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.