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Finding the Fourth Proportional to 17,991.41, 26,988.41 and 5,509.81

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Solution

The fourth proportional to 17,991.41, 26,988.41 and 5,509.81 is: 8,265.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.41 : 26,988.41 = 5,509.81 : x
  2. Step 2: Convert to fraction form
    17,991.41/26,988.41 = 5,509.81/x
  3. Step 3: Cross multiply
    17,991.41x = 26,988.41 × 5,509.81
  4. Step 4: Simplify right side
    17,991.41x = 148,700,916.28
  5. Step 5: Solve for x
    x = 148,700,916.28/17,991.41
  6. Step 6: Final answer
    x = 8,265.11

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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.