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Finding the Fourth Proportional to 10,962, 15,131.40 and 6,546

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Solution

The fourth proportional to 10,962, 15,131.40 and 6,546 is: 9,035.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,962 : 15,131.40 = 6,546 : x
  2. Step 2: Convert to fraction form
    10,962/15,131.40 = 6,546/x
  3. Step 3: Cross multiply
    10,962x = 15,131.40 × 6,546
  4. Step 4: Simplify right side
    10,962x = 99,050,144.40
  5. Step 5: Solve for x
    x = 99,050,144.40/10,962
  6. Step 6: Final answer
    x = 9,035.77

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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.