Home / 18,936.64-28,385.76-9,061.44

Finding the Fourth Proportional to 18,936.64, 28,385.76 and 9,061.44

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Solution

The fourth proportional to 18,936.64, 28,385.76 and 9,061.44 is: 13,582.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.64 : 28,385.76 = 9,061.44 : x
  2. Step 2: Convert to fraction form
    18,936.64/28,385.76 = 9,061.44/x
  3. Step 3: Cross multiply
    18,936.64x = 28,385.76 × 9,061.44
  4. Step 4: Simplify right side
    18,936.64x = 257,215,861.09
  5. Step 5: Solve for x
    x = 257,215,861.09/18,936.64
  6. Step 6: Final answer
    x = 13,582.97

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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.