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Finding the Fourth Proportional to 28,753.30, 43,104.30 and 11,219.05

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Solution

The fourth proportional to 28,753.30, 43,104.30 and 11,219.05 is: 16,818.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,753.30 : 43,104.30 = 11,219.05 : x
  2. Step 2: Convert to fraction form
    28,753.30/43,104.30 = 11,219.05/x
  3. Step 3: Cross multiply
    28,753.30x = 43,104.30 × 11,219.05
  4. Step 4: Simplify right side
    28,753.30x = 483,589,296.92
  5. Step 5: Solve for x
    x = 483,589,296.92/28,753.30
  6. Step 6: Final answer
    x = 16,818.57

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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.