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Finding the Fourth Proportional to 11,905.81, 17,859.15 and 4,510.81

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Solution

The fourth proportional to 11,905.81, 17,859.15 and 4,510.81 is: 6,766.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.81 : 17,859.15 = 4,510.81 : x
  2. Step 2: Convert to fraction form
    11,905.81/17,859.15 = 4,510.81/x
  3. Step 3: Cross multiply
    11,905.81x = 17,859.15 × 4,510.81
  4. Step 4: Simplify right side
    11,905.81x = 80,559,232.41
  5. Step 5: Solve for x
    x = 80,559,232.41/11,905.81
  6. Step 6: Final answer
    x = 6,766.38

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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.