Home / 20,334.28-30,520.68-10,480.36

Finding the Fourth Proportional to 20,334.28, 30,520.68 and 10,480.36

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Solution

The fourth proportional to 20,334.28, 30,520.68 and 10,480.36 is: 15,730.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.28 : 30,520.68 = 10,480.36 : x
  2. Step 2: Convert to fraction form
    20,334.28/30,520.68 = 10,480.36/x
  3. Step 3: Cross multiply
    20,334.28x = 30,520.68 × 10,480.36
  4. Step 4: Simplify right side
    20,334.28x = 319,867,713.84
  5. Step 5: Solve for x
    x = 319,867,713.84/20,334.28
  6. Step 6: Final answer
    x = 15,730.47

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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.