Home / 13,979.42-20,953.96-6,964.66

Finding the Fourth Proportional to 13,979.42, 20,953.96 and 6,964.66

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Solution

The fourth proportional to 13,979.42, 20,953.96 and 6,964.66 is: 10,439.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.42 : 20,953.96 = 6,964.66 : x
  2. Step 2: Convert to fraction form
    13,979.42/20,953.96 = 6,964.66/x
  3. Step 3: Cross multiply
    13,979.42x = 20,953.96 × 6,964.66
  4. Step 4: Simplify right side
    13,979.42x = 145,937,207.05
  5. Step 5: Solve for x
    x = 145,937,207.05/13,979.42
  6. Step 6: Final answer
    x = 10,439.43

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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.