Home / 18,497.78-27,753.66-11,107.40

Finding the Fourth Proportional to 18,497.78, 27,753.66 and 11,107.40

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Solution

The fourth proportional to 18,497.78, 27,753.66 and 11,107.40 is: 16,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,497.78 : 27,753.66 = 11,107.40 : x
  2. Step 2: Convert to fraction form
    18,497.78/27,753.66 = 11,107.40/x
  3. Step 3: Cross multiply
    18,497.78x = 27,753.66 × 11,107.40
  4. Step 4: Simplify right side
    18,497.78x = 308,270,864.32
  5. Step 5: Solve for x
    x = 308,270,864.32/18,497.78
  6. Step 6: Final answer
    x = 16,665.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.