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Finding the Fourth Proportional to 11,729.93, 17,503.95 and 10,682.20

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Solution

The fourth proportional to 11,729.93, 17,503.95 and 10,682.20 is: 15,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.93 : 17,503.95 = 10,682.20 : x
  2. Step 2: Convert to fraction form
    11,729.93/17,503.95 = 10,682.20/x
  3. Step 3: Cross multiply
    11,729.93x = 17,503.95 × 10,682.20
  4. Step 4: Simplify right side
    11,729.93x = 186,980,553.76
  5. Step 5: Solve for x
    x = 186,980,553.76/11,729.93
  6. Step 6: Final answer
    x = 15,940.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.