Home / 10,212.68-15,315.78-3,285.56

Finding the Fourth Proportional to 10,212.68, 15,315.78 and 3,285.56

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Solution

The fourth proportional to 10,212.68, 15,315.78 and 3,285.56 is: 4,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.68 : 15,315.78 = 3,285.56 : x
  2. Step 2: Convert to fraction form
    10,212.68/15,315.78 = 3,285.56/x
  3. Step 3: Cross multiply
    10,212.68x = 15,315.78 × 3,285.56
  4. Step 4: Simplify right side
    10,212.68x = 50,320,964.75
  5. Step 5: Solve for x
    x = 50,320,964.75/10,212.68
  6. Step 6: Final answer
    x = 4,927.30

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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.