Home / 30,380.88-45,580.68-10,659.72

Finding the Fourth Proportional to 30,380.88, 45,580.68 and 10,659.72

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Solution

The fourth proportional to 30,380.88, 45,580.68 and 10,659.72 is: 15,992.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,380.88 : 45,580.68 = 10,659.72 : x
  2. Step 2: Convert to fraction form
    30,380.88/45,580.68 = 10,659.72/x
  3. Step 3: Cross multiply
    30,380.88x = 45,580.68 × 10,659.72
  4. Step 4: Simplify right side
    30,380.88x = 485,877,286.21
  5. Step 5: Solve for x
    x = 485,877,286.21/30,380.88
  6. Step 6: Final answer
    x = 15,992.86

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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.