Home / 22,278.20-33,390.30-12,900.20

Finding the Fourth Proportional to 22,278.20, 33,390.30 and 12,900.20

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Solution

The fourth proportional to 22,278.20, 33,390.30 and 12,900.20 is: 19,334.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,278.20 : 33,390.30 = 12,900.20 : x
  2. Step 2: Convert to fraction form
    22,278.20/33,390.30 = 12,900.20/x
  3. Step 3: Cross multiply
    22,278.20x = 33,390.30 × 12,900.20
  4. Step 4: Simplify right side
    22,278.20x = 430,741,548.06
  5. Step 5: Solve for x
    x = 430,741,548.06/22,278.20
  6. Step 6: Final answer
    x = 19,334.67

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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.