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Finding the Fourth Proportional to 17,950.16, 26,930.36 and 8,721.36

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Solution

The fourth proportional to 17,950.16, 26,930.36 and 8,721.36 is: 13,084.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,950.16 : 26,930.36 = 8,721.36 : x
  2. Step 2: Convert to fraction form
    17,950.16/26,930.36 = 8,721.36/x
  3. Step 3: Cross multiply
    17,950.16x = 26,930.36 × 8,721.36
  4. Step 4: Simplify right side
    17,950.16x = 234,869,364.49
  5. Step 5: Solve for x
    x = 234,869,364.49/17,950.16
  6. Step 6: Final answer
    x = 13,084.53

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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.