Home / 21,379.56-32,078.70-11,381.92

Finding the Fourth Proportional to 21,379.56, 32,078.70 and 11,381.92

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Solution

The fourth proportional to 21,379.56, 32,078.70 and 11,381.92 is: 17,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.56 : 32,078.70 = 11,381.92 : x
  2. Step 2: Convert to fraction form
    21,379.56/32,078.70 = 11,381.92/x
  3. Step 3: Cross multiply
    21,379.56x = 32,078.70 × 11,381.92
  4. Step 4: Simplify right side
    21,379.56x = 365,117,197.10
  5. Step 5: Solve for x
    x = 365,117,197.10/21,379.56
  6. Step 6: Final answer
    x = 17,077.86

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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.