Home / 20,008.76-30,039.06-12,628.04

Finding the Fourth Proportional to 20,008.76, 30,039.06 and 12,628.04

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Solution

The fourth proportional to 20,008.76, 30,039.06 and 12,628.04 is: 18,958.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,008.76 : 30,039.06 = 12,628.04 : x
  2. Step 2: Convert to fraction form
    20,008.76/30,039.06 = 12,628.04/x
  3. Step 3: Cross multiply
    20,008.76x = 30,039.06 × 12,628.04
  4. Step 4: Simplify right side
    20,008.76x = 379,334,451.24
  5. Step 5: Solve for x
    x = 379,334,451.24/20,008.76
  6. Step 6: Final answer
    x = 18,958.42

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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.