Home / 12,542.90-18,817.16-4,222.28

Finding the Fourth Proportional to 12,542.90, 18,817.16 and 4,222.28

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Solution

The fourth proportional to 12,542.90, 18,817.16 and 4,222.28 is: 6,334.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,542.90 : 18,817.16 = 4,222.28 : x
  2. Step 2: Convert to fraction form
    12,542.90/18,817.16 = 4,222.28/x
  3. Step 3: Cross multiply
    12,542.90x = 18,817.16 × 4,222.28
  4. Step 4: Simplify right side
    12,542.90x = 79,451,262.16
  5. Step 5: Solve for x
    x = 79,451,262.16/12,542.90
  6. Step 6: Final answer
    x = 6,334.36

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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.