Home / 20,105.04-30,159.90-7,634.40

Finding the Fourth Proportional to 20,105.04, 30,159.90 and 7,634.40

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Solution

The fourth proportional to 20,105.04, 30,159.90 and 7,634.40 is: 11,452.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.04 : 30,159.90 = 7,634.40 : x
  2. Step 2: Convert to fraction form
    20,105.04/30,159.90 = 7,634.40/x
  3. Step 3: Cross multiply
    20,105.04x = 30,159.90 × 7,634.40
  4. Step 4: Simplify right side
    20,105.04x = 230,252,740.56
  5. Step 5: Solve for x
    x = 230,252,740.56/20,105.04
  6. Step 6: Final answer
    x = 11,452.49

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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.