Home / 13,692.61-18,883.97-8,910.83

Finding the Fourth Proportional to 13,692.61, 18,883.97 and 8,910.83

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Solution

The fourth proportional to 13,692.61, 18,883.97 and 8,910.83 is: 12,289.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,692.61 : 18,883.97 = 8,910.83 : x
  2. Step 2: Convert to fraction form
    13,692.61/18,883.97 = 8,910.83/x
  3. Step 3: Cross multiply
    13,692.61x = 18,883.97 × 8,910.83
  4. Step 4: Simplify right side
    13,692.61x = 168,271,760.20
  5. Step 5: Solve for x
    x = 168,271,760.20/13,692.61
  6. Step 6: Final answer
    x = 12,289.24

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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.