Home / 21,197.90-29,253.24-11,638.70

Finding the Fourth Proportional to 21,197.90, 29,253.24 and 11,638.70

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Solution

The fourth proportional to 21,197.90, 29,253.24 and 11,638.70 is: 16,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.90 : 29,253.24 = 11,638.70 : x
  2. Step 2: Convert to fraction form
    21,197.90/29,253.24 = 11,638.70/x
  3. Step 3: Cross multiply
    21,197.90x = 29,253.24 × 11,638.70
  4. Step 4: Simplify right side
    21,197.90x = 340,469,684.39
  5. Step 5: Solve for x
    x = 340,469,684.39/21,197.90
  6. Step 6: Final answer
    x = 16,061.48

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1.5x scale

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.