Home / 11,137.81-16,660.55-8,485.25

Finding the Fourth Proportional to 11,137.81, 16,660.55 and 8,485.25

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Solution

The fourth proportional to 11,137.81, 16,660.55 and 8,485.25 is: 12,692.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.81 : 16,660.55 = 8,485.25 : x
  2. Step 2: Convert to fraction form
    11,137.81/16,660.55 = 8,485.25/x
  3. Step 3: Cross multiply
    11,137.81x = 16,660.55 × 8,485.25
  4. Step 4: Simplify right side
    11,137.81x = 141,368,869.02
  5. Step 5: Solve for x
    x = 141,368,869.02/11,137.81
  6. Step 6: Final answer
    x = 12,692.70

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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.