Home / 21,726.48-29,965.44-13,761

Finding the Fourth Proportional to 21,726.48, 29,965.44 and 13,761

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Solution

The fourth proportional to 21,726.48, 29,965.44 and 13,761 is: 18,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.48 : 29,965.44 = 13,761 : x
  2. Step 2: Convert to fraction form
    21,726.48/29,965.44 = 13,761/x
  3. Step 3: Cross multiply
    21,726.48x = 29,965.44 × 13,761
  4. Step 4: Simplify right side
    21,726.48x = 412,354,419.84
  5. Step 5: Solve for x
    x = 412,354,419.84/21,726.48
  6. Step 6: Final answer
    x = 18,979.35

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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.