Home / 20,143.96-30,213.88-5,354.37

Finding the Fourth Proportional to 20,143.96, 30,213.88 and 5,354.37

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Solution

The fourth proportional to 20,143.96, 30,213.88 and 5,354.37 is: 8,031.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.96 : 30,213.88 = 5,354.37 : x
  2. Step 2: Convert to fraction form
    20,143.96/30,213.88 = 5,354.37/x
  3. Step 3: Cross multiply
    20,143.96x = 30,213.88 × 5,354.37
  4. Step 4: Simplify right side
    20,143.96x = 161,776,279.27
  5. Step 5: Solve for x
    x = 161,776,279.27/20,143.96
  6. Step 6: Final answer
    x = 8,031.01

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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.