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Finding the Fourth Proportional to 11,476.70, 17,215.23 and 3,980.49

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Solution

The fourth proportional to 11,476.70, 17,215.23 and 3,980.49 is: 5,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,476.70 : 17,215.23 = 3,980.49 : x
  2. Step 2: Convert to fraction form
    11,476.70/17,215.23 = 3,980.49/x
  3. Step 3: Cross multiply
    11,476.70x = 17,215.23 × 3,980.49
  4. Step 4: Simplify right side
    11,476.70x = 68,525,050.86
  5. Step 5: Solve for x
    x = 68,525,050.86/11,476.70
  6. Step 6: Final answer
    x = 5,970.80

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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.