Home / 20,680.64-28,548.96-13,232.96

Finding the Fourth Proportional to 20,680.64, 28,548.96 and 13,232.96

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Solution

The fourth proportional to 20,680.64, 28,548.96 and 13,232.96 is: 18,267.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.64 : 28,548.96 = 13,232.96 : x
  2. Step 2: Convert to fraction form
    20,680.64/28,548.96 = 13,232.96/x
  3. Step 3: Cross multiply
    20,680.64x = 28,548.96 × 13,232.96
  4. Step 4: Simplify right side
    20,680.64x = 377,787,245.72
  5. Step 5: Solve for x
    x = 377,787,245.72/20,680.64
  6. Step 6: Final answer
    x = 18,267.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.