Home / 15,187.42-20,960.46-8,899.79

Finding the Fourth Proportional to 15,187.42, 20,960.46 and 8,899.79

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Solution

The fourth proportional to 15,187.42, 20,960.46 and 8,899.79 is: 12,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.42 : 20,960.46 = 8,899.79 : x
  2. Step 2: Convert to fraction form
    15,187.42/20,960.46 = 8,899.79/x
  3. Step 3: Cross multiply
    15,187.42x = 20,960.46 × 8,899.79
  4. Step 4: Simplify right side
    15,187.42x = 186,543,692.30
  5. Step 5: Solve for x
    x = 186,543,692.30/15,187.42
  6. Step 6: Final answer
    x = 12,282.78

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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.