Home / 11,977.45-16,520.68-7,886.95

Finding the Fourth Proportional to 11,977.45, 16,520.68 and 7,886.95

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Solution

The fourth proportional to 11,977.45, 16,520.68 and 7,886.95 is: 10,878.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,977.45 : 16,520.68 = 7,886.95 : x
  2. Step 2: Convert to fraction form
    11,977.45/16,520.68 = 7,886.95/x
  3. Step 3: Cross multiply
    11,977.45x = 16,520.68 × 7,886.95
  4. Step 4: Simplify right side
    11,977.45x = 130,297,777.13
  5. Step 5: Solve for x
    x = 130,297,777.13/11,977.45
  6. Step 6: Final answer
    x = 10,878.59

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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.