Home / 11,128.20-16,692.30-8,017.80

Finding the Fourth Proportional to 11,128.20, 16,692.30 and 8,017.80

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Solution

The fourth proportional to 11,128.20, 16,692.30 and 8,017.80 is: 12,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.20 : 16,692.30 = 8,017.80 : x
  2. Step 2: Convert to fraction form
    11,128.20/16,692.30 = 8,017.80/x
  3. Step 3: Cross multiply
    11,128.20x = 16,692.30 × 8,017.80
  4. Step 4: Simplify right side
    11,128.20x = 133,835,522.94
  5. Step 5: Solve for x
    x = 133,835,522.94/11,128.20
  6. Step 6: Final answer
    x = 12,026.70

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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.