Home / 20,090.62-30,135.81-10,914.94

Finding the Fourth Proportional to 20,090.62, 30,135.81 and 10,914.94

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Solution

The fourth proportional to 20,090.62, 30,135.81 and 10,914.94 is: 16,372.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.62 : 30,135.81 = 10,914.94 : x
  2. Step 2: Convert to fraction form
    20,090.62/30,135.81 = 10,914.94/x
  3. Step 3: Cross multiply
    20,090.62x = 30,135.81 × 10,914.94
  4. Step 4: Simplify right side
    20,090.62x = 328,930,558.00
  5. Step 5: Solve for x
    x = 328,930,558.00/20,090.62
  6. Step 6: Final answer
    x = 16,372.34

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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.