Home / 12,490.22-18,729.02-4,167.27

Finding the Fourth Proportional to 12,490.22, 18,729.02 and 4,167.27

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Solution

The fourth proportional to 12,490.22, 18,729.02 and 4,167.27 is: 6,248.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.22 : 18,729.02 = 4,167.27 : x
  2. Step 2: Convert to fraction form
    12,490.22/18,729.02 = 4,167.27/x
  3. Step 3: Cross multiply
    12,490.22x = 18,729.02 × 4,167.27
  4. Step 4: Simplify right side
    12,490.22x = 78,048,893.59
  5. Step 5: Solve for x
    x = 78,048,893.59/12,490.22
  6. Step 6: Final answer
    x = 6,248.80

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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.