Home / 20,228.08-27,903.72-12,672.78

Finding the Fourth Proportional to 20,228.08, 27,903.72 and 12,672.78

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Solution

The fourth proportional to 20,228.08, 27,903.72 and 12,672.78 is: 17,481.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.08 : 27,903.72 = 12,672.78 : x
  2. Step 2: Convert to fraction form
    20,228.08/27,903.72 = 12,672.78/x
  3. Step 3: Cross multiply
    20,228.08x = 27,903.72 × 12,672.78
  4. Step 4: Simplify right side
    20,228.08x = 353,617,704.74
  5. Step 5: Solve for x
    x = 353,617,704.74/20,228.08
  6. Step 6: Final answer
    x = 17,481.53

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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.