Home / 21,638.43-29,860.70-12,077.82

Finding the Fourth Proportional to 21,638.43, 29,860.70 and 12,077.82

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Solution

The fourth proportional to 21,638.43, 29,860.70 and 12,077.82 is: 16,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.43 : 29,860.70 = 12,077.82 : x
  2. Step 2: Convert to fraction form
    21,638.43/29,860.70 = 12,077.82/x
  3. Step 3: Cross multiply
    21,638.43x = 29,860.70 × 12,077.82
  4. Step 4: Simplify right side
    21,638.43x = 360,652,099.28
  5. Step 5: Solve for x
    x = 360,652,099.28/21,638.43
  6. Step 6: Final answer
    x = 16,667.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.