Home / 20,154.03-30,189.46-11,808.70

Finding the Fourth Proportional to 20,154.03, 30,189.46 and 11,808.70

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Solution

The fourth proportional to 20,154.03, 30,189.46 and 11,808.70 is: 17,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.03 : 30,189.46 = 11,808.70 : x
  2. Step 2: Convert to fraction form
    20,154.03/30,189.46 = 11,808.70/x
  3. Step 3: Cross multiply
    20,154.03x = 30,189.46 × 11,808.70
  4. Step 4: Simplify right side
    20,154.03x = 356,498,276.30
  5. Step 5: Solve for x
    x = 356,498,276.30/20,154.03
  6. Step 6: Final answer
    x = 17,688.68

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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.