Home / 13,787.28-20,680.68-3,926.64

Finding the Fourth Proportional to 13,787.28, 20,680.68 and 3,926.64

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Solution

The fourth proportional to 13,787.28, 20,680.68 and 3,926.64 is: 5,889.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.28 : 20,680.68 = 3,926.64 : x
  2. Step 2: Convert to fraction form
    13,787.28/20,680.68 = 3,926.64/x
  3. Step 3: Cross multiply
    13,787.28x = 20,680.68 × 3,926.64
  4. Step 4: Simplify right side
    13,787.28x = 81,205,585.32
  5. Step 5: Solve for x
    x = 81,205,585.32/13,787.28
  6. Step 6: Final answer
    x = 5,889.89

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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.