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Finding the Fourth Proportional to 18,605.55, 27,908.48 and 5,458.14

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Solution

The fourth proportional to 18,605.55, 27,908.48 and 5,458.14 is: 8,187.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.55 : 27,908.48 = 5,458.14 : x
  2. Step 2: Convert to fraction form
    18,605.55/27,908.48 = 5,458.14/x
  3. Step 3: Cross multiply
    18,605.55x = 27,908.48 × 5,458.14
  4. Step 4: Simplify right side
    18,605.55x = 152,328,391.03
  5. Step 5: Solve for x
    x = 152,328,391.03/18,605.55
  6. Step 6: Final answer
    x = 8,187.26

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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.