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Finding the Fourth Proportional to 11,988.63, 17,968.94 and 7,061.73

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Solution

The fourth proportional to 11,988.63, 17,968.94 and 7,061.73 is: 10,584.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.63 : 17,968.94 = 7,061.73 : x
  2. Step 2: Convert to fraction form
    11,988.63/17,968.94 = 7,061.73/x
  3. Step 3: Cross multiply
    11,988.63x = 17,968.94 × 7,061.73
  4. Step 4: Simplify right side
    11,988.63x = 126,891,827.53
  5. Step 5: Solve for x
    x = 126,891,827.53/11,988.63
  6. Step 6: Final answer
    x = 10,584.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.