Home / 20,057.30-30,085.96-12,672.98

Finding the Fourth Proportional to 20,057.30, 30,085.96 and 12,672.98

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Solution

The fourth proportional to 20,057.30, 30,085.96 and 12,672.98 is: 19,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.30 : 30,085.96 = 12,672.98 : x
  2. Step 2: Convert to fraction form
    20,057.30/30,085.96 = 12,672.98/x
  3. Step 3: Cross multiply
    20,057.30x = 30,085.96 × 12,672.98
  4. Step 4: Simplify right side
    20,057.30x = 381,278,769.36
  5. Step 5: Solve for x
    x = 381,278,769.36/20,057.30
  6. Step 6: Final answer
    x = 19,009.48

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Similar ratio
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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.