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Finding the Fourth Proportional to 21,133.66, 29,163.15 and 11,573.66

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Solution

The fourth proportional to 21,133.66, 29,163.15 and 11,573.66 is: 15,970.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.66 : 29,163.15 = 11,573.66 : x
  2. Step 2: Convert to fraction form
    21,133.66/29,163.15 = 11,573.66/x
  3. Step 3: Cross multiply
    21,133.66x = 29,163.15 × 11,573.66
  4. Step 4: Simplify right side
    21,133.66x = 337,524,382.63
  5. Step 5: Solve for x
    x = 337,524,382.63/21,133.66
  6. Step 6: Final answer
    x = 15,970.94

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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.