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Finding the Fourth Proportional to 17,693.87, 26,518.93 and 8,931.29

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Solution

The fourth proportional to 17,693.87, 26,518.93 and 8,931.29 is: 13,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,693.87 : 26,518.93 = 8,931.29 : x
  2. Step 2: Convert to fraction form
    17,693.87/26,518.93 = 8,931.29/x
  3. Step 3: Cross multiply
    17,693.87x = 26,518.93 × 8,931.29
  4. Step 4: Simplify right side
    17,693.87x = 236,848,099.40
  5. Step 5: Solve for x
    x = 236,848,099.40/17,693.87
  6. Step 6: Final answer
    x = 13,385.89

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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.