Home / 21,551.66-29,760-15,896.22

Finding the Fourth Proportional to 21,551.66, 29,760 and 15,896.22

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Solution

The fourth proportional to 21,551.66, 29,760 and 15,896.22 is: 21,950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.66 : 29,760 = 15,896.22 : x
  2. Step 2: Convert to fraction form
    21,551.66/29,760 = 15,896.22/x
  3. Step 3: Cross multiply
    21,551.66x = 29,760 × 15,896.22
  4. Step 4: Simplify right side
    21,551.66x = 473,071,507.20
  5. Step 5: Solve for x
    x = 473,071,507.20/21,551.66
  6. Step 6: Final answer
    x = 21,950.58

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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.