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Finding the Fourth Proportional to 18,673.42, 27,802.82 and 18,411.90

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Solution

The fourth proportional to 18,673.42, 27,802.82 and 18,411.90 is: 27,413.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.42 : 27,802.82 = 18,411.90 : x
  2. Step 2: Convert to fraction form
    18,673.42/27,802.82 = 18,411.90/x
  3. Step 3: Cross multiply
    18,673.42x = 27,802.82 × 18,411.90
  4. Step 4: Simplify right side
    18,673.42x = 511,902,741.56
  5. Step 5: Solve for x
    x = 511,902,741.56/18,673.42
  6. Step 6: Final answer
    x = 27,413.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.