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Finding the Fourth Proportional to 11,689.70, 17,527.80 and 7,996.40

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Solution

The fourth proportional to 11,689.70, 17,527.80 and 7,996.40 is: 11,989.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.70 : 17,527.80 = 7,996.40 : x
  2. Step 2: Convert to fraction form
    11,689.70/17,527.80 = 7,996.40/x
  3. Step 3: Cross multiply
    11,689.70x = 17,527.80 × 7,996.40
  4. Step 4: Simplify right side
    11,689.70x = 140,159,299.92
  5. Step 5: Solve for x
    x = 140,159,299.92/11,689.70
  6. Step 6: Final answer
    x = 11,989.98

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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.