Home / 12,861.40-19,277.70-5,464.60

Finding the Fourth Proportional to 12,861.40, 19,277.70 and 5,464.60

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Solution

The fourth proportional to 12,861.40, 19,277.70 and 5,464.60 is: 8,190.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.40 : 19,277.70 = 5,464.60 : x
  2. Step 2: Convert to fraction form
    12,861.40/19,277.70 = 5,464.60/x
  3. Step 3: Cross multiply
    12,861.40x = 19,277.70 × 5,464.60
  4. Step 4: Simplify right side
    12,861.40x = 105,344,919.42
  5. Step 5: Solve for x
    x = 105,344,919.42/12,861.40
  6. Step 6: Final answer
    x = 8,190.78

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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.