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Finding the Fourth Proportional to 11,472.70, 17,187.10 and 7,756.70

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Solution

The fourth proportional to 11,472.70, 17,187.10 and 7,756.70 is: 11,620.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,472.70 : 17,187.10 = 7,756.70 : x
  2. Step 2: Convert to fraction form
    11,472.70/17,187.10 = 7,756.70/x
  3. Step 3: Cross multiply
    11,472.70x = 17,187.10 × 7,756.70
  4. Step 4: Simplify right side
    11,472.70x = 133,315,178.57
  5. Step 5: Solve for x
    x = 133,315,178.57/11,472.70
  6. Step 6: Final answer
    x = 11,620.21

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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.