Home / 20,571.40-30,852.48-12,253.79

Finding the Fourth Proportional to 20,571.40, 30,852.48 and 12,253.79

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Solution

The fourth proportional to 20,571.40, 30,852.48 and 12,253.79 is: 18,377.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.40 : 30,852.48 = 12,253.79 : x
  2. Step 2: Convert to fraction form
    20,571.40/30,852.48 = 12,253.79/x
  3. Step 3: Cross multiply
    20,571.40x = 30,852.48 × 12,253.79
  4. Step 4: Simplify right side
    20,571.40x = 378,059,933.98
  5. Step 5: Solve for x
    x = 378,059,933.98/20,571.40
  6. Step 6: Final answer
    x = 18,377.94

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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.