Home / 12,654.68-18,986.94-5,257.28

Finding the Fourth Proportional to 12,654.68, 18,986.94 and 5,257.28

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Solution

The fourth proportional to 12,654.68, 18,986.94 and 5,257.28 is: 7,887.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.68 : 18,986.94 = 5,257.28 : x
  2. Step 2: Convert to fraction form
    12,654.68/18,986.94 = 5,257.28/x
  3. Step 3: Cross multiply
    12,654.68x = 18,986.94 × 5,257.28
  4. Step 4: Simplify right side
    12,654.68x = 99,819,659.92
  5. Step 5: Solve for x
    x = 99,819,659.92/12,654.68
  6. Step 6: Final answer
    x = 7,887.96

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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.