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Finding the Fourth Proportional to 10,998.77, 16,480.86 and 8,506.06

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Solution

The fourth proportional to 10,998.77, 16,480.86 and 8,506.06 is: 12,745.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.77 : 16,480.86 = 8,506.06 : x
  2. Step 2: Convert to fraction form
    10,998.77/16,480.86 = 8,506.06/x
  3. Step 3: Cross multiply
    10,998.77x = 16,480.86 × 8,506.06
  4. Step 4: Simplify right side
    10,998.77x = 140,187,184.01
  5. Step 5: Solve for x
    x = 140,187,184.01/10,998.77
  6. Step 6: Final answer
    x = 12,745.71

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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.