Home / 20,628.42-28,467.30-11,196.98

Finding the Fourth Proportional to 20,628.42, 28,467.30 and 11,196.98

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Solution

The fourth proportional to 20,628.42, 28,467.30 and 11,196.98 is: 15,451.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.42 : 28,467.30 = 11,196.98 : x
  2. Step 2: Convert to fraction form
    20,628.42/28,467.30 = 11,196.98/x
  3. Step 3: Cross multiply
    20,628.42x = 28,467.30 × 11,196.98
  4. Step 4: Simplify right side
    20,628.42x = 318,747,892.30
  5. Step 5: Solve for x
    x = 318,747,892.30/20,628.42
  6. Step 6: Final answer
    x = 15,451.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.