Home / 12,542.25-18,814.32-4,222.20

Finding the Fourth Proportional to 12,542.25, 18,814.32 and 4,222.20

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Solution

The fourth proportional to 12,542.25, 18,814.32 and 4,222.20 is: 6,333.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,542.25 : 18,814.32 = 4,222.20 : x
  2. Step 2: Convert to fraction form
    12,542.25/18,814.32 = 4,222.20/x
  3. Step 3: Cross multiply
    12,542.25x = 18,814.32 × 4,222.20
  4. Step 4: Simplify right side
    12,542.25x = 79,437,821.90
  5. Step 5: Solve for x
    x = 79,437,821.90/12,542.25
  6. Step 6: Final answer
    x = 6,333.62

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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.