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Finding the Fourth Proportional to 13,266.80, 19,900.20 and 10,674.80

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Solution

The fourth proportional to 13,266.80, 19,900.20 and 10,674.80 is: 16,012.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.80 : 19,900.20 = 10,674.80 : x
  2. Step 2: Convert to fraction form
    13,266.80/19,900.20 = 10,674.80/x
  3. Step 3: Cross multiply
    13,266.80x = 19,900.20 × 10,674.80
  4. Step 4: Simplify right side
    13,266.80x = 212,430,654.96
  5. Step 5: Solve for x
    x = 212,430,654.96/13,266.80
  6. Step 6: Final answer
    x = 16,012.20

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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.