Home / 11,331.70-16,963.95-8,422.90

Finding the Fourth Proportional to 11,331.70, 16,963.95 and 8,422.90

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Solution

The fourth proportional to 11,331.70, 16,963.95 and 8,422.90 is: 12,609.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.70 : 16,963.95 = 8,422.90 : x
  2. Step 2: Convert to fraction form
    11,331.70/16,963.95 = 8,422.90/x
  3. Step 3: Cross multiply
    11,331.70x = 16,963.95 × 8,422.90
  4. Step 4: Simplify right side
    11,331.70x = 142,885,654.46
  5. Step 5: Solve for x
    x = 142,885,654.46/11,331.70
  6. Step 6: Final answer
    x = 12,609.37

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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.