Home / 20,108.20-30,147.72-13,518.04

Finding the Fourth Proportional to 20,108.20, 30,147.72 and 13,518.04

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Solution

The fourth proportional to 20,108.20, 30,147.72 and 13,518.04 is: 20,267.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.20 : 30,147.72 = 13,518.04 : x
  2. Step 2: Convert to fraction form
    20,108.20/30,147.72 = 13,518.04/x
  3. Step 3: Cross multiply
    20,108.20x = 30,147.72 × 13,518.04
  4. Step 4: Simplify right side
    20,108.20x = 407,538,084.87
  5. Step 5: Solve for x
    x = 407,538,084.87/20,108.20
  6. Step 6: Final answer
    x = 20,267.26

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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.