Home / 10,212.96-15,320.88-3,289.44

Finding the Fourth Proportional to 10,212.96, 15,320.88 and 3,289.44

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Solution

The fourth proportional to 10,212.96, 15,320.88 and 3,289.44 is: 4,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.96 : 15,320.88 = 3,289.44 : x
  2. Step 2: Convert to fraction form
    10,212.96/15,320.88 = 3,289.44/x
  3. Step 3: Cross multiply
    10,212.96x = 15,320.88 × 3,289.44
  4. Step 4: Simplify right side
    10,212.96x = 50,397,115.51
  5. Step 5: Solve for x
    x = 50,397,115.51/10,212.96
  6. Step 6: Final answer
    x = 4,934.62

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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.