Home / 20,427.94-28,191.70-12,467.88

Finding the Fourth Proportional to 20,427.94, 28,191.70 and 12,467.88

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Solution

The fourth proportional to 20,427.94, 28,191.70 and 12,467.88 is: 17,206.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.94 : 28,191.70 = 12,467.88 : x
  2. Step 2: Convert to fraction form
    20,427.94/28,191.70 = 12,467.88/x
  3. Step 3: Cross multiply
    20,427.94x = 28,191.70 × 12,467.88
  4. Step 4: Simplify right side
    20,427.94x = 351,490,732.60
  5. Step 5: Solve for x
    x = 351,490,732.60/20,427.94
  6. Step 6: Final answer
    x = 17,206.37

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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.