Home / 20,109.19-30,154.20-9,015.97

Finding the Fourth Proportional to 20,109.19, 30,154.20 and 9,015.97

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Solution

The fourth proportional to 20,109.19, 30,154.20 and 9,015.97 is: 13,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.19 : 30,154.20 = 9,015.97 : x
  2. Step 2: Convert to fraction form
    20,109.19/30,154.20 = 9,015.97/x
  3. Step 3: Cross multiply
    20,109.19x = 30,154.20 × 9,015.97
  4. Step 4: Simplify right side
    20,109.19x = 271,869,362.57
  5. Step 5: Solve for x
    x = 271,869,362.57/20,109.19
  6. Step 6: Final answer
    x = 13,519.66

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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.