Home / 20,730.01-31,072.42-10,179.09

Finding the Fourth Proportional to 20,730.01, 31,072.42 and 10,179.09

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Solution

The fourth proportional to 20,730.01, 31,072.42 and 10,179.09 is: 15,257.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.01 : 31,072.42 = 10,179.09 : x
  2. Step 2: Convert to fraction form
    20,730.01/31,072.42 = 10,179.09/x
  3. Step 3: Cross multiply
    20,730.01x = 31,072.42 × 10,179.09
  4. Step 4: Simplify right side
    20,730.01x = 316,288,959.70
  5. Step 5: Solve for x
    x = 316,288,959.70/20,730.01
  6. Step 6: Final answer
    x = 15,257.54

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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.