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Finding the Fourth Proportional to 17,927.11, 26,890.62 and 8,538.65

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Solution

The fourth proportional to 17,927.11, 26,890.62 and 8,538.65 is: 12,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,927.11 : 26,890.62 = 8,538.65 : x
  2. Step 2: Convert to fraction form
    17,927.11/26,890.62 = 8,538.65/x
  3. Step 3: Cross multiply
    17,927.11x = 26,890.62 × 8,538.65
  4. Step 4: Simplify right side
    17,927.11x = 229,609,574.86
  5. Step 5: Solve for x
    x = 229,609,574.86/17,927.11
  6. Step 6: Final answer
    x = 12,807.96

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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.