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Finding the Fourth Proportional to 21,695.08, 29,939.14 and 11,759.08

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Solution

The fourth proportional to 21,695.08, 29,939.14 and 11,759.08 is: 16,227.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.08 : 29,939.14 = 11,759.08 : x
  2. Step 2: Convert to fraction form
    21,695.08/29,939.14 = 11,759.08/x
  3. Step 3: Cross multiply
    21,695.08x = 29,939.14 × 11,759.08
  4. Step 4: Simplify right side
    21,695.08x = 352,056,742.39
  5. Step 5: Solve for x
    x = 352,056,742.39/21,695.08
  6. Step 6: Final answer
    x = 16,227.49

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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.