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Finding the Fourth Proportional to 10,918.45, 16,363.97 and 4,671.12

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Solution

The fourth proportional to 10,918.45, 16,363.97 and 4,671.12 is: 7,000.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.45 : 16,363.97 = 4,671.12 : x
  2. Step 2: Convert to fraction form
    10,918.45/16,363.97 = 4,671.12/x
  3. Step 3: Cross multiply
    10,918.45x = 16,363.97 × 4,671.12
  4. Step 4: Simplify right side
    10,918.45x = 76,437,962.37
  5. Step 5: Solve for x
    x = 76,437,962.37/10,918.45
  6. Step 6: Final answer
    x = 7,000.81

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.