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Finding the Fourth Proportional to 18,601, 27,877.77 and 8,718.51

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Solution

The fourth proportional to 18,601, 27,877.77 and 8,718.51 is: 13,066.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601 : 27,877.77 = 8,718.51 : x
  2. Step 2: Convert to fraction form
    18,601/27,877.77 = 8,718.51/x
  3. Step 3: Cross multiply
    18,601x = 27,877.77 × 8,718.51
  4. Step 4: Simplify right side
    18,601x = 243,052,477.13
  5. Step 5: Solve for x
    x = 243,052,477.13/18,601
  6. Step 6: Final answer
    x = 13,066.63

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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.