Home / 20,620.14-28,462.50-12,122.12

Finding the Fourth Proportional to 20,620.14, 28,462.50 and 12,122.12

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Solution

The fourth proportional to 20,620.14, 28,462.50 and 12,122.12 is: 16,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.14 : 28,462.50 = 12,122.12 : x
  2. Step 2: Convert to fraction form
    20,620.14/28,462.50 = 12,122.12/x
  3. Step 3: Cross multiply
    20,620.14x = 28,462.50 × 12,122.12
  4. Step 4: Simplify right side
    20,620.14x = 345,025,698.19
  5. Step 5: Solve for x
    x = 345,025,698.19/20,620.14
  6. Step 6: Final answer
    x = 16,732.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.