Home / 12,160.30-16,780.99-6,855.12

Finding the Fourth Proportional to 12,160.30, 16,780.99 and 6,855.12

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Solution

The fourth proportional to 12,160.30, 16,780.99 and 6,855.12 is: 9,459.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.30 : 16,780.99 = 6,855.12 : x
  2. Step 2: Convert to fraction form
    12,160.30/16,780.99 = 6,855.12/x
  3. Step 3: Cross multiply
    12,160.30x = 16,780.99 × 6,855.12
  4. Step 4: Simplify right side
    12,160.30x = 115,035,695.88
  5. Step 5: Solve for x
    x = 115,035,695.88/12,160.30
  6. Step 6: Final answer
    x = 9,459.94

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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.