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Finding the Fourth Proportional to 10,791.69, 14,900.98 and 8,440.53

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Solution

The fourth proportional to 10,791.69, 14,900.98 and 8,440.53 is: 11,654.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791.69 : 14,900.98 = 8,440.53 : x
  2. Step 2: Convert to fraction form
    10,791.69/14,900.98 = 8,440.53/x
  3. Step 3: Cross multiply
    10,791.69x = 14,900.98 × 8,440.53
  4. Step 4: Simplify right side
    10,791.69x = 125,772,227.07
  5. Step 5: Solve for x
    x = 125,772,227.07/10,791.69
  6. Step 6: Final answer
    x = 11,654.54

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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.