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Finding the Fourth Proportional to 12,487.82, 17,232.69 and 7,110.99

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Solution

The fourth proportional to 12,487.82, 17,232.69 and 7,110.99 is: 9,812.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.82 : 17,232.69 = 7,110.99 : x
  2. Step 2: Convert to fraction form
    12,487.82/17,232.69 = 7,110.99/x
  3. Step 3: Cross multiply
    12,487.82x = 17,232.69 × 7,110.99
  4. Step 4: Simplify right side
    12,487.82x = 122,541,486.26
  5. Step 5: Solve for x
    x = 122,541,486.26/12,487.82
  6. Step 6: Final answer
    x = 9,812.88

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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.