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Finding the Fourth Proportional to 10,605.62, 14,640.54 and 8,087.96

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Solution

The fourth proportional to 10,605.62, 14,640.54 and 8,087.96 is: 11,165.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,605.62 : 14,640.54 = 8,087.96 : x
  2. Step 2: Convert to fraction form
    10,605.62/14,640.54 = 8,087.96/x
  3. Step 3: Cross multiply
    10,605.62x = 14,640.54 × 8,087.96
  4. Step 4: Simplify right side
    10,605.62x = 118,412,101.90
  5. Step 5: Solve for x
    x = 118,412,101.90/10,605.62
  6. Step 6: Final answer
    x = 11,165.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.