Home / 20,145.64-30,218.43-5,354.56

Finding the Fourth Proportional to 20,145.64, 30,218.43 and 5,354.56

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Solution

The fourth proportional to 20,145.64, 30,218.43 and 5,354.56 is: 8,031.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.64 : 30,218.43 = 5,354.56 : x
  2. Step 2: Convert to fraction form
    20,145.64/30,218.43 = 5,354.56/x
  3. Step 3: Cross multiply
    20,145.64x = 30,218.43 × 5,354.56
  4. Step 4: Simplify right side
    20,145.64x = 161,806,334.90
  5. Step 5: Solve for x
    x = 161,806,334.90/20,145.64
  6. Step 6: Final answer
    x = 8,031.83

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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.