Home / 13,481.40-20,234.10-7,927.80

Finding the Fourth Proportional to 13,481.40, 20,234.10 and 7,927.80

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Solution

The fourth proportional to 13,481.40, 20,234.10 and 7,927.80 is: 11,898.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.40 : 20,234.10 = 7,927.80 : x
  2. Step 2: Convert to fraction form
    13,481.40/20,234.10 = 7,927.80/x
  3. Step 3: Cross multiply
    13,481.40x = 20,234.10 × 7,927.80
  4. Step 4: Simplify right side
    13,481.40x = 160,411,897.98
  5. Step 5: Solve for x
    x = 160,411,897.98/13,481.40
  6. Step 6: Final answer
    x = 11,898.76

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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.