Home / 20,090.45-30,141.75-7,614.29

Finding the Fourth Proportional to 20,090.45, 30,141.75 and 7,614.29

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Solution

The fourth proportional to 20,090.45, 30,141.75 and 7,614.29 is: 11,423.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.45 : 30,141.75 = 7,614.29 : x
  2. Step 2: Convert to fraction form
    20,090.45/30,141.75 = 7,614.29/x
  3. Step 3: Cross multiply
    20,090.45x = 30,141.75 × 7,614.29
  4. Step 4: Simplify right side
    20,090.45x = 229,507,874.90
  5. Step 5: Solve for x
    x = 229,507,874.90/20,090.45
  6. Step 6: Final answer
    x = 11,423.73

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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.