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Finding the Fourth Proportional to 28,741.60, 43,093.76 and 11,213.20

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Solution

The fourth proportional to 28,741.60, 43,093.76 and 11,213.20 is: 16,812.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,741.60 : 43,093.76 = 11,213.20 : x
  2. Step 2: Convert to fraction form
    28,741.60/43,093.76 = 11,213.20/x
  3. Step 3: Cross multiply
    28,741.60x = 43,093.76 × 11,213.20
  4. Step 4: Simplify right side
    28,741.60x = 483,218,949.63
  5. Step 5: Solve for x
    x = 483,218,949.63/28,741.60
  6. Step 6: Final answer
    x = 16,812.53

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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.