Home / 11,128.30-16,692.45-8,503.90

Finding the Fourth Proportional to 11,128.30, 16,692.45 and 8,503.90

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Solution

The fourth proportional to 11,128.30, 16,692.45 and 8,503.90 is: 12,755.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.30 : 16,692.45 = 8,503.90 : x
  2. Step 2: Convert to fraction form
    11,128.30/16,692.45 = 8,503.90/x
  3. Step 3: Cross multiply
    11,128.30x = 16,692.45 × 8,503.90
  4. Step 4: Simplify right side
    11,128.30x = 141,950,925.56
  5. Step 5: Solve for x
    x = 141,950,925.56/11,128.30
  6. Step 6: Final answer
    x = 12,755.85

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1.5x scale

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.