Home / 21,160.62-29,201.70-11,729.22

Finding the Fourth Proportional to 21,160.62, 29,201.70 and 11,729.22

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Solution

The fourth proportional to 21,160.62, 29,201.70 and 11,729.22 is: 16,186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.62 : 29,201.70 = 11,729.22 : x
  2. Step 2: Convert to fraction form
    21,160.62/29,201.70 = 11,729.22/x
  3. Step 3: Cross multiply
    21,160.62x = 29,201.70 × 11,729.22
  4. Step 4: Simplify right side
    21,160.62x = 342,513,163.67
  5. Step 5: Solve for x
    x = 342,513,163.67/21,160.62
  6. Step 6: Final answer
    x = 16,186.35

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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.