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Finding the Fourth Proportional to 15,571.74, 23,361.12 and 8,179.68

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Solution

The fourth proportional to 15,571.74, 23,361.12 and 8,179.68 is: 12,271.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.74 : 23,361.12 = 8,179.68 : x
  2. Step 2: Convert to fraction form
    15,571.74/23,361.12 = 8,179.68/x
  3. Step 3: Cross multiply
    15,571.74x = 23,361.12 × 8,179.68
  4. Step 4: Simplify right side
    15,571.74x = 191,086,486.04
  5. Step 5: Solve for x
    x = 191,086,486.04/15,571.74
  6. Step 6: Final answer
    x = 12,271.36

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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.