Home / 20,397.53-30,592.66-12,979.97

Finding the Fourth Proportional to 20,397.53, 30,592.66 and 12,979.97

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Solution

The fourth proportional to 20,397.53, 30,592.66 and 12,979.97 is: 19,467.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.53 : 30,592.66 = 12,979.97 : x
  2. Step 2: Convert to fraction form
    20,397.53/30,592.66 = 12,979.97/x
  3. Step 3: Cross multiply
    20,397.53x = 30,592.66 × 12,979.97
  4. Step 4: Simplify right side
    20,397.53x = 397,091,744.12
  5. Step 5: Solve for x
    x = 397,091,744.12/20,397.53
  6. Step 6: Final answer
    x = 19,467.64

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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.