Home / 21,726.41-29,966.96-19,939.64

Finding the Fourth Proportional to 21,726.41, 29,966.96 and 19,939.64

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Solution

The fourth proportional to 21,726.41, 29,966.96 and 19,939.64 is: 27,502.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.41 : 29,966.96 = 19,939.64 : x
  2. Step 2: Convert to fraction form
    21,726.41/29,966.96 = 19,939.64/x
  3. Step 3: Cross multiply
    21,726.41x = 29,966.96 × 19,939.64
  4. Step 4: Simplify right side
    21,726.41x = 597,530,519.06
  5. Step 5: Solve for x
    x = 597,530,519.06/21,726.41
  6. Step 6: Final answer
    x = 27,502.50

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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.