Home / 21,053.14-29,062.78-13,887.28

Finding the Fourth Proportional to 21,053.14, 29,062.78 and 13,887.28

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Solution

The fourth proportional to 21,053.14, 29,062.78 and 13,887.28 is: 19,170.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.14 : 29,062.78 = 13,887.28 : x
  2. Step 2: Convert to fraction form
    21,053.14/29,062.78 = 13,887.28/x
  3. Step 3: Cross multiply
    21,053.14x = 29,062.78 × 13,887.28
  4. Step 4: Simplify right side
    21,053.14x = 403,602,963.44
  5. Step 5: Solve for x
    x = 403,602,963.44/21,053.14
  6. Step 6: Final answer
    x = 19,170.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.