Home / 20,562.20-30,843.30-7,415.90

Finding the Fourth Proportional to 20,562.20, 30,843.30 and 7,415.90

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Solution

The fourth proportional to 20,562.20, 30,843.30 and 7,415.90 is: 11,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.20 : 30,843.30 = 7,415.90 : x
  2. Step 2: Convert to fraction form
    20,562.20/30,843.30 = 7,415.90/x
  3. Step 3: Cross multiply
    20,562.20x = 30,843.30 × 7,415.90
  4. Step 4: Simplify right side
    20,562.20x = 228,730,828.47
  5. Step 5: Solve for x
    x = 228,730,828.47/20,562.20
  6. Step 6: Final answer
    x = 11,123.85

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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.