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Finding the Fourth Proportional to 12,539.48, 17,327.04 and 8,996.48

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Solution

The fourth proportional to 12,539.48, 17,327.04 and 8,996.48 is: 12,431.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.48 : 17,327.04 = 8,996.48 : x
  2. Step 2: Convert to fraction form
    12,539.48/17,327.04 = 8,996.48/x
  3. Step 3: Cross multiply
    12,539.48x = 17,327.04 × 8,996.48
  4. Step 4: Simplify right side
    12,539.48x = 155,882,368.82
  5. Step 5: Solve for x
    x = 155,882,368.82/12,539.48
  6. Step 6: Final answer
    x = 12,431.33

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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.