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Finding the Fourth Proportional to 28,991.42, 43,477.56 and 11,213.84

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Solution

The fourth proportional to 28,991.42, 43,477.56 and 11,213.84 is: 16,817.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.42 : 43,477.56 = 11,213.84 : x
  2. Step 2: Convert to fraction form
    28,991.42/43,477.56 = 11,213.84/x
  3. Step 3: Cross multiply
    28,991.42x = 43,477.56 × 11,213.84
  4. Step 4: Simplify right side
    28,991.42x = 487,550,510.12
  5. Step 5: Solve for x
    x = 487,550,510.12/28,991.42
  6. Step 6: Final answer
    x = 16,817.06

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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.