Home / 20,072.10-30,098.73-8,978.88

Finding the Fourth Proportional to 20,072.10, 30,098.73 and 8,978.88

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Solution

The fourth proportional to 20,072.10, 30,098.73 and 8,978.88 is: 13,464.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.10 : 30,098.73 = 8,978.88 : x
  2. Step 2: Convert to fraction form
    20,072.10/30,098.73 = 8,978.88/x
  3. Step 3: Cross multiply
    20,072.10x = 30,098.73 × 8,978.88
  4. Step 4: Simplify right side
    20,072.10x = 270,252,884.82
  5. Step 5: Solve for x
    x = 270,252,884.82/20,072.10
  6. Step 6: Final answer
    x = 13,464.11

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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.