Home / 21,726.22-29,966.69-19,939.45

Finding the Fourth Proportional to 21,726.22, 29,966.69 and 19,939.45

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Solution

The fourth proportional to 21,726.22, 29,966.69 and 19,939.45 is: 27,502.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.22 : 29,966.69 = 19,939.45 : x
  2. Step 2: Convert to fraction form
    21,726.22/29,966.69 = 19,939.45/x
  3. Step 3: Cross multiply
    21,726.22x = 29,966.69 × 19,939.45
  4. Step 4: Simplify right side
    21,726.22x = 597,519,341.99
  5. Step 5: Solve for x
    x = 597,519,341.99/21,726.22
  6. Step 6: Final answer
    x = 27,502.23

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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.