Home / 20,015.40-30,041.91-10,161.75

Finding the Fourth Proportional to 20,015.40, 30,041.91 and 10,161.75

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Solution

The fourth proportional to 20,015.40, 30,041.91 and 10,161.75 is: 15,252.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.40 : 30,041.91 = 10,161.75 : x
  2. Step 2: Convert to fraction form
    20,015.40/30,041.91 = 10,161.75/x
  3. Step 3: Cross multiply
    20,015.40x = 30,041.91 × 10,161.75
  4. Step 4: Simplify right side
    20,015.40x = 305,278,378.94
  5. Step 5: Solve for x
    x = 305,278,378.94/20,015.40
  6. Step 6: Final answer
    x = 15,252.17

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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.