Home / 13,780.64-20,680.16-8,853.82

Finding the Fourth Proportional to 13,780.64, 20,680.16 and 8,853.82

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Solution

The fourth proportional to 13,780.64, 20,680.16 and 8,853.82 is: 13,286.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.64 : 20,680.16 = 8,853.82 : x
  2. Step 2: Convert to fraction form
    13,780.64/20,680.16 = 8,853.82/x
  3. Step 3: Cross multiply
    13,780.64x = 20,680.16 × 8,853.82
  4. Step 4: Simplify right side
    13,780.64x = 183,098,318.24
  5. Step 5: Solve for x
    x = 183,098,318.24/13,780.64
  6. Step 6: Final answer
    x = 13,286.63

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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.