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Finding the Fourth Proportional to 13,479, 20,254.34 and 7,243.62

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Solution

The fourth proportional to 13,479, 20,254.34 and 7,243.62 is: 10,884.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479 : 20,254.34 = 7,243.62 : x
  2. Step 2: Convert to fraction form
    13,479/20,254.34 = 7,243.62/x
  3. Step 3: Cross multiply
    13,479x = 20,254.34 × 7,243.62
  4. Step 4: Simplify right side
    13,479x = 146,714,742.31
  5. Step 5: Solve for x
    x = 146,714,742.31/13,479
  6. Step 6: Final answer
    x = 10,884.69

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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.