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Finding the Fourth Proportional to 18,127.36, 25,022 and 11,424.28

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Solution

The fourth proportional to 18,127.36, 25,022 and 11,424.28 is: 15,769.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,127.36 : 25,022 = 11,424.28 : x
  2. Step 2: Convert to fraction form
    18,127.36/25,022 = 11,424.28/x
  3. Step 3: Cross multiply
    18,127.36x = 25,022 × 11,424.28
  4. Step 4: Simplify right side
    18,127.36x = 285,858,334.16
  5. Step 5: Solve for x
    x = 285,858,334.16/18,127.36
  6. Step 6: Final answer
    x = 15,769.44

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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.