Home / 20,354.40-30,519.72-12,040.56

Finding the Fourth Proportional to 20,354.40, 30,519.72 and 12,040.56

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Solution

The fourth proportional to 20,354.40, 30,519.72 and 12,040.56 is: 18,053.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.40 : 30,519.72 = 12,040.56 : x
  2. Step 2: Convert to fraction form
    20,354.40/30,519.72 = 12,040.56/x
  3. Step 3: Cross multiply
    20,354.40x = 30,519.72 × 12,040.56
  4. Step 4: Simplify right side
    20,354.40x = 367,474,519.84
  5. Step 5: Solve for x
    x = 367,474,519.84/20,354.40
  6. Step 6: Final answer
    x = 18,053.81

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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.