Home / 12,209.40-18,270.30-10,571.56

Finding the Fourth Proportional to 12,209.40, 18,270.30 and 10,571.56

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Solution

The fourth proportional to 12,209.40, 18,270.30 and 10,571.56 is: 15,819.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.40 : 18,270.30 = 10,571.56 : x
  2. Step 2: Convert to fraction form
    12,209.40/18,270.30 = 10,571.56/x
  3. Step 3: Cross multiply
    12,209.40x = 18,270.30 × 10,571.56
  4. Step 4: Simplify right side
    12,209.40x = 193,145,572.67
  5. Step 5: Solve for x
    x = 193,145,572.67/12,209.40
  6. Step 6: Final answer
    x = 15,819.42

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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.