Home / 20,037.20-30,049.92-7,548.21

Finding the Fourth Proportional to 20,037.20, 30,049.92 and 7,548.21

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Solution

The fourth proportional to 20,037.20, 30,049.92 and 7,548.21 is: 11,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,037.20 : 30,049.92 = 7,548.21 : x
  2. Step 2: Convert to fraction form
    20,037.20/30,049.92 = 7,548.21/x
  3. Step 3: Cross multiply
    20,037.20x = 30,049.92 × 7,548.21
  4. Step 4: Simplify right side
    20,037.20x = 226,823,106.64
  5. Step 5: Solve for x
    x = 226,823,106.64/20,037.20
  6. Step 6: Final answer
    x = 11,320.10

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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.