Home / 20,143.91-30,213.08-5,354.03

Finding the Fourth Proportional to 20,143.91, 30,213.08 and 5,354.03

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Solution

The fourth proportional to 20,143.91, 30,213.08 and 5,354.03 is: 8,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.91 : 30,213.08 = 5,354.03 : x
  2. Step 2: Convert to fraction form
    20,143.91/30,213.08 = 5,354.03/x
  3. Step 3: Cross multiply
    20,143.91x = 30,213.08 × 5,354.03
  4. Step 4: Simplify right side
    20,143.91x = 161,761,709.94
  5. Step 5: Solve for x
    x = 161,761,709.94/20,143.91
  6. Step 6: Final answer
    x = 8,030.30

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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.