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Finding the Fourth Proportional to 18,637.77, 27,960.71 and 10,745.40

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Solution

The fourth proportional to 18,637.77, 27,960.71 and 10,745.40 is: 16,120.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.77 : 27,960.71 = 10,745.40 : x
  2. Step 2: Convert to fraction form
    18,637.77/27,960.71 = 10,745.40/x
  3. Step 3: Cross multiply
    18,637.77x = 27,960.71 × 10,745.40
  4. Step 4: Simplify right side
    18,637.77x = 300,448,959.51
  5. Step 5: Solve for x
    x = 300,448,959.51/18,637.77
  6. Step 6: Final answer
    x = 16,120.43

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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.