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Finding the Fourth Proportional to 19,957.36, 27,541.36 and 11,005.20

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Solution

The fourth proportional to 19,957.36, 27,541.36 and 11,005.20 is: 15,187.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957.36 : 27,541.36 = 11,005.20 : x
  2. Step 2: Convert to fraction form
    19,957.36/27,541.36 = 11,005.20/x
  3. Step 3: Cross multiply
    19,957.36x = 27,541.36 × 11,005.20
  4. Step 4: Simplify right side
    19,957.36x = 303,098,175.07
  5. Step 5: Solve for x
    x = 303,098,175.07/19,957.36
  6. Step 6: Final answer
    x = 15,187.29

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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.