Home / 20,185.92-30,276.72-7,038

Finding the Fourth Proportional to 20,185.92, 30,276.72 and 7,038

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Solution

The fourth proportional to 20,185.92, 30,276.72 and 7,038 is: 10,556.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.92 : 30,276.72 = 7,038 : x
  2. Step 2: Convert to fraction form
    20,185.92/30,276.72 = 7,038/x
  3. Step 3: Cross multiply
    20,185.92x = 30,276.72 × 7,038
  4. Step 4: Simplify right side
    20,185.92x = 213,087,555.36
  5. Step 5: Solve for x
    x = 213,087,555.36/20,185.92
  6. Step 6: Final answer
    x = 10,556.25

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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.