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Finding the Fourth Proportional to 18,845.30, 28,267.04 and 7,157.61

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Solution

The fourth proportional to 18,845.30, 28,267.04 and 7,157.61 is: 10,736.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,845.30 : 28,267.04 = 7,157.61 : x
  2. Step 2: Convert to fraction form
    18,845.30/28,267.04 = 7,157.61/x
  3. Step 3: Cross multiply
    18,845.30x = 28,267.04 × 7,157.61
  4. Step 4: Simplify right side
    18,845.30x = 202,324,448.17
  5. Step 5: Solve for x
    x = 202,324,448.17/18,845.30
  6. Step 6: Final answer
    x = 10,736.07

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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.