Home / 21,820.91-32,745.71-11,967.11

Finding the Fourth Proportional to 21,820.91, 32,745.71 and 11,967.11

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Solution

The fourth proportional to 21,820.91, 32,745.71 and 11,967.11 is: 17,958.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.91 : 32,745.71 = 11,967.11 : x
  2. Step 2: Convert to fraction form
    21,820.91/32,745.71 = 11,967.11/x
  3. Step 3: Cross multiply
    21,820.91x = 32,745.71 × 11,967.11
  4. Step 4: Simplify right side
    21,820.91x = 391,871,379.79
  5. Step 5: Solve for x
    x = 391,871,379.79/21,820.91
  6. Step 6: Final answer
    x = 17,958.53

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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.