Home / 13,612.64-20,379.33-10,118.16

Finding the Fourth Proportional to 13,612.64, 20,379.33 and 10,118.16

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Solution

The fourth proportional to 13,612.64, 20,379.33 and 10,118.16 is: 15,147.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.64 : 20,379.33 = 10,118.16 : x
  2. Step 2: Convert to fraction form
    13,612.64/20,379.33 = 10,118.16/x
  3. Step 3: Cross multiply
    13,612.64x = 20,379.33 × 10,118.16
  4. Step 4: Simplify right side
    13,612.64x = 206,201,321.63
  5. Step 5: Solve for x
    x = 206,201,321.63/13,612.64
  6. Step 6: Final answer
    x = 15,147.79

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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.