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Finding the Fourth Proportional to 18,717.86, 25,830.64 and 10,761.64

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Solution

The fourth proportional to 18,717.86, 25,830.64 and 10,761.64 is: 14,851.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.86 : 25,830.64 = 10,761.64 : x
  2. Step 2: Convert to fraction form
    18,717.86/25,830.64 = 10,761.64/x
  3. Step 3: Cross multiply
    18,717.86x = 25,830.64 × 10,761.64
  4. Step 4: Simplify right side
    18,717.86x = 277,980,048.65
  5. Step 5: Solve for x
    x = 277,980,048.65/18,717.86
  6. Step 6: Final answer
    x = 14,851.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.