Home / 20,168.10-30,215.70-17,835.30

Finding the Fourth Proportional to 20,168.10, 30,215.70 and 17,835.30

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Solution

The fourth proportional to 20,168.10, 30,215.70 and 17,835.30 is: 26,720.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.10 : 30,215.70 = 17,835.30 : x
  2. Step 2: Convert to fraction form
    20,168.10/30,215.70 = 17,835.30/x
  3. Step 3: Cross multiply
    20,168.10x = 30,215.70 × 17,835.30
  4. Step 4: Simplify right side
    20,168.10x = 538,906,074.21
  5. Step 5: Solve for x
    x = 538,906,074.21/20,168.10
  6. Step 6: Final answer
    x = 26,720.72

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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.